Qual Sociol (2008) 31:221–230
DOI 10.1007/s11133-008-9109-x
SPECIAL ISSUE ON POLITICAL VIOLENCE
Research on Social Movements and Political Violence
Donatella della Porta
Published online: 15 July 2008
# Springer Science + Business Media, LLC 2008
Abstract Attention to extreme forms of political violence in the social sciences has been
episodic, and studies of different forms of political violence have followed different
approaches, with “breakdown” theories mostly used for the analysis of right-wing radicalism,
social movement theories sometimes adapted to research on left-wing radical groups, and
area study specialists focusing on ethnic and religious forms. Some of the studies on extreme
forms of political violence that have emerged within the social movement tradition have
nevertheless been able to trace processes of conflict escalation through the detailed examination of historical cases. This article assesses some of the knowledge acquired in previous
research approaching issues of political violence from the social movement perspective, as
well as the challenges coming from new waves of debate on terrorist and counterterrorist
action and discourses. In doing this, the article reviews contributions coming from research
looking at violence as escalation of action repertoires within protest cycles; political
opportunity and the state in escalation processes; resource mobilization and violent
organizations; narratives of violence; and militant constructions of external reality.
Keywords Political violence . Social movements
Attention to extreme forms of political violence in the social sciences has been episodic, with
some peaks in periods of high visibility of terrorist attacks, but little accumulation of results.
There are several reasons for this. First, some of the research has been considered to be more
oriented towards developing antiterrorist policies than to a social science understanding of the
phenomenon. In fact, “many who have written about terrorism have been directly or indirectly
involved in the business of counterterrorism, and their vision has been narrowed and distorted
by the search for effective responses to terrorism…. [S]ocial movement scholars, with very few
exceptions, have said little about terrorism” (Goodwin 2004, p. 259). Second, studies of
different forms of political violence have followed different approaches, with “breakdown”
theories mostly used for the analysis of right-wing radicalism, social movement theories
sometimes adapted to research on left-wing radical groups, and area study specialists focusing
on ethnic and religious forms. Third, and most fundamentally, there has been a tendency to reify
D. della Porta (*)
Department of Political and Social Sciences, European University Institute,
Badia Fiesolana, Via dei Roccettini 9, 50016 San Domenico di Fiesole Firenze, Italy
e-mail:
[email protected]
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definitions of terrorism on the basis of political actors’ decisions to use violence (Tilly 2004). In
fact, there is uneasiness in using a term which is not only politically highly contested, but also
of doubtful heuristic value. Fourth, explanations tend to focus on either macro-level systemic
causes, meso-level organizational characteristics or micro-level individual motivations, with
little communication between different levels of analysis (della Porta 1995).
Some of the studies on extreme forms of political violence that have emerged within the
social movement tradition have nevertheless been able to trace processes of conflict escalation
through the detailed examination of historical cases. In what follows, I briefly assess some of
the knowledge acquired in previous research as well as the challenges coming from new waves
of debate on terrorist and counterterrorist action and discourses.
Violence as escalation of action repertoires within protest cycles
Prior research
Social movements research places political violence in the context of other forms of protest by
using Tilly’s concept of repertoires of action. A repertoire of action describes a limited set of
forms of protest that are commonly used in a particular time and place. Typically, the repertoire
was learned from previous waves of protest in one country, but forms of action were also
adopted and adapted cross-nationally. The choice of action repertoires has been considered as a
relational dynamic, developing from the interactions between challengers and élites (Tilly 1978).
Societies occasionally experience periods of increased protest activity involving one or more
issues and many protesting groups. These clusters of protest activity, called protest cycles,
typically develop a sharp peak and then decline, which can be seen when the number of
protest events is plotted over time. The repertoire of action develops and changes during the
intense interaction within a protest cycle. The analysis of protest cycles is particularly useful
for an understanding of the development of political violence, as violence is frequently one of
the outcomes of a cycle of protest, though not the only nor the most important one.
Research on such different cases as the Italian and German left-libertarian movement
families in the late 1960s and early 1970s, or the ethno-nationalist conflicts in Northern
Ireland and the Basque countries, showed that violence escalated in much the same forms and
according to much the same timing, during cycles of protest that developed in all those cases.
This was true despite the fact that the cases involved different political and social actors. The
forms of action were initially disruptive because they were unconventional, but they were
peaceful and had moderate aims, mainly claims for reform of the existing institutions.
Although remaining mainly non-violent, the protest repertoires radicalized at the margins,
especially during street battles with adversaries and the police (della Porta and Tarrow 1987;
Tarrow 1989).
During cycles of protest, the development of the forms of protest actions follows a reciprocal
process of innovation and adaptation, with each side responding to the other. As their
adversaries adapted their tactics to counter those of the movement, the social movements
changed their tactics in order to continue to mobilize (McAdam 1983). In the course of
experimentation with different tactics, both dissidents and social control agents in the Italian
and German cases tested “hard” techniques, thus creating resources for violence (della Porta
1995). The same happened in Northern Ireland and the Basque countries, where mainly
peaceful social movements met not only state repression but also the paramilitary activities of
death squads. This pattern also occurred to an even larger extent in weak democracies in
Latin America (Waldmann 1993; White 1993; Wieviorka 1988).
Qual Sociol (2008) 31:221–230
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However, after the 1970s, social movements within the left-libertarian culture underwent a
learning process that primarily produced widespread support for nonviolence. A learning
process on the part of both movement activists and the police defused the forms of conflict that
had characterized the 1970s. In the 1980s, despite moments of sometimes severe tension,
particularly during direct action such as the blocking of gates at military bases, peace activists
and police were experienced in avoiding escalation into violence (Rochon 1988, pp. 186–7).
More recently, although violence escalated in Seattle, and then in Prague, Gothenburg and
Genoa, the large majority of activists of the global justice movement kept violence under
control through tactical innovation: they created “violence-free zones”; they divided marches
into blocks, according to the tactics and location; and deployed protest marshals “armed” with
video cameras in order to ensure a stricter implementation of nonviolent tactics (della Porta
and Reiter 2004).
New challenges
This does not mean, though, that the use of violence as a political means has declined overall.
For social movement scholars with an interest in research on political violence, the larger world
picture points toward the need to address types of social movements they are not usually
familiar with, such as right-wing groups and religious fundamentalists. As Charles Tilly (2003,
p. 58) sadly summarized, since 1945 “the world as a whole has taken decisive, frightening
steps away from its painfully achieved segregation between armies and civilian populations,
between war and peace, between international and civil war, between lethal and non-lethal
applications of force. It has moved toward armed struggle within existing states and towards
state-sponsored killing, deprivation, or expulsion of whole population categories.” Clearly
more research is needed on these forms of primarily state violence that have until now have
received little attention from social movement scholars.
Violence in context: Political opportunity and the state
Prior research
In social movement studies, repertoires for protest have traditionally been seen as influenced
by a political opportunity structure, consisting of both a formal, institutional aspect and an
informal, cultural one (Kriesi 1989, p. 295). A major breakthrough in social movement
research came when researchers found that social movements develop and succeed not
because they emerge to address new grievances, but rather because something in the larger
political context allows existing grievances to be heard. These contextual dimensions, called
political opportunities, include regime shifts, periods of political instability, or changes in the
composition of elites that may provide an opening for social movements. Conversely, a
political environment that was initially more open to social movements may close as the state
tries to reassert control over protest, or as new groups come to power that are more hostile to
the demands of social movements.
In general, research has shown that exclusive political systems and unstable democracies
produce more radical opposition and violent escalation. Closing political opportunities shaped
mobilization in Northern Ireland, as the inclusive and reformist mobilizing messages of the
1960s Irish civil rights movement lost ground face to police repression, lack of political
responsiveness, and counter-mobilizations, bringing about an exclusivist nationalist frame in
the 1970s (Bosi 2006). Moreover, right-wing political violence appears develop more when
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political opportunities are closed off by the state than by sustained grievances related to the
presence of migrants, or economic strains (Koopmans 2005).
Research in the new social movements (NSM) perspective has in particular reflected on how
political and social conditions facilitate the implosion of social actors into violence (Melucci
1982; Wieviorka 1988). In Italy as well as in the Basque countries, the use of violence has
been interpreted as signal of a closure of the collective actors on themselves, and their
inability to develop into a social movement or to revitalize a social movement that has begun
to decline.
Particularly relevant in determining the evolution of radicalization processes are the tactics
of policing protest and more generally the conditions under which public order and security
are maintained (for a definition of protest policing, see della Porta and Reiter 1998, 2004).
The development of political violence in the 1970s interacted with paramilitary policing of
social unrest that triggered processes of radicalization among social movements. In Italy, the
police were more prepared for “communist-led riots” than well-organized small group violence
(Reiter 1998). Interactions on the street and other forms of repression took particularly
dramatic forms in the Basque country between the end of Francoist regime and the early
phases of transition to democracy. Even after transition to democracy had been completed,
the Spanish local authorities lacked popular legitimacy in the Basque countries. Similarly in
Northern Ireland, the traditional colonial approach taken by the Royal Ulster Constabulary
impacted on movement strategies, as well as on the character of organizations and the ways
in which they perceived state responses (Ellison and Smyth 2000).
Encounters between the movements and the state apparatuses produced radicalization in a
wide variety of movement cases. The very conditions that favored the escalation of violence in
the left-libertarian movements often stimulated radical counter-movements as well, and thus
national “radical sectors” composed of left-wing as well as right-wing radical groups, violent
movements and violent counter-movements. This development was characteristic especially of
Italy, where from the very beginning of the protest cycle, the student activists clashed with
neo-Fascists and, throughout the seventies, brutal conflicts escalated among young members of
right-wing and left-wing non-underground groups who fired at each other right in front of high
schools (della Porta 1995). Racist groups, Unionists, and Loyalists used terror against civil
rights activists as well as ethno-nationalists in the US, Northern Ireland and Spain, respectively.
The policing of protest derives from several characteristics of the police forces themselves:
their military versus civil organizational structures, the police culture, the type of training, and
the degree of professionalization and specialization. These elements influence police strategies
as well as the police knowledge about their own role and their own environment, affecting their
assessment of the rights of demonstrators. National structures such as police organization,
characteristics of the judiciary, codes of laws, and constitutional rights set constraints on protest
policing and, more broadly, institutional reactions to social movements. But police strategies
also and even primarily depend upon political choices. They must be studied in relation to the
changing political opportunity structure.
New challenges
A new challenge for research on the contextual opportunities for violence arises from the global
dimensions of contemporary forms of political violence, and from the discourse that develops
around them. In the field of political violence as well as in social movement studies more
generally, research focuses on the nation-state as the central unit of analysis. This is no longer
tenable, as both terrorism and counterterrorism go global, and geopolitical issues as well as
wars, diasporas and the like acquire more and more explanatory power. The effects of
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radicalization linked to repression at the national level are increasingly global ones. For instance
political repression played an important role in the radicalization of Islamic fundamentalist
militancy, as the suppression by the Nasser regime radicalized elements of the Muslim
Brotherhood and led individuals to transform the ideology of modernist Islamists into a Jihadist
frame and a call to arms’ (Esposito 2002).
In line with the shift of attention to the supranational dynamics of radicalization, there is the
need to extend the analysis to geographical areas other than the ones traditionally addressed by
social movement studies. To date most of the cases of radicalization studied by social
movement scholars took place in democracies. However, it is becoming more and more
relevant to examine the dynamics of repression in non-democratic states. Weak states with
governments that are unable to control their territory and/or populations are particularly prone
to internal escalations, but also to the “export” of radical frames and practices (Crenshaw 2005).
While state response and violent radicalization have traditionally fed each other, greater levels
of democracy do tend to curtail violations of human rights. State responses within
authoritarian regimes are particularly brutal (e.g. Boudreau 2004; Davenport and Armstrong
2004; Pruitt and Kim 2004; Francisco 2000; Davenport 2005).
Yet more research is also needed to address evolving repressive strategies in democratic
regimes, as the new millennium opened with at least a partial inversion of some trends that
had previously appeared in the police control of protest. First, although the control of protest
was never totally taken away from private police in factories or on campuses, the privatization
of public spaces such as shopping malls, as well as the outsourcing of police functions to
private bodies, has increasingly challenged the state monopoly of force. Second, if in the past
control of protest tended to be centralized at the national level, the control of transnational
protests has brought about an increasing collaboration between different national police
bodies, with declining transparency. This process seems more widespread in Europe, linked
to an increasing intervention of the European Union. In this process, not only are the rights of
social movements limited, but militarization of the police is facilitated through tough
escalation strategies, including upgrades of police equipment, specialized counterterrorism
training, and innovative tactics. Finally, strategies of police control, especially but not only
at transnational counter-summits at which demonstrators from many countries gather to
protest an international summit meeting, has often deviated from the previously established
protest policing policies of negotiation and de-escalation, thus constraining the freedom of
demonstrators (della Porta et al. 2006).
Resource mobilization and violent organizations
Prior research
The development of political violence up to the descent into the underground cannot be
understood just in terms of environmental or macro-level preconditions such as political
opportunities and protest policing styles. Drawing on organizational approaches to social
movements, research in the resource mobilization perspective has addressed the characteristics
of the organizations that went underground as well as competition among and within
organizations within the social movement sector. At the meso-level, organizational dynamics
play an important role. Underground organizations evolved within and then broke away from
larger, non-violent, social movement organizations. In both Italy and Germany in the late
1960s, the decline of the student mobilization and reduction in available resources increased
competition among the several networks that constituted the left-libertarian social movement
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families. In Italy, the large New Left organization Potere Operaio and Lotta Continua split on
the issue of violence, after having created semi-clandestine militant subgroups. A similar
dynamic developed in Germany. In the US, the Weather Underground developed as a fraction
of the Students for a Democratic Society (SDS) when they split over the issue of the use of
violence, among other things, and similar dynamics were found in Japan (Zwerman, Steinhoff
and della Porta 2000; Steinhofff 1991). Similarly, militant nationalist movements developed
through a process of interactions, competition and coalition-building among different streams
of Irish and Basque nationalists (Irvin 1999; Maney 2007). Exploiting environmental
conditions conductive to militancy, these splinter groups underwent further radicalization and
eventually created new resources and occasions for violence.
New challenges
If in this earlier context underground organizations developed mainly into compartmentalized
hierarchical structures, contemporary extreme forms of political violence seem instead to
follow a different model, which new technology has made possible and new norms have
legitimized. A challenge for those studying political violence within a social movement approach nowadays is the strongly networked structures of the groups that are labeled as terrorist
today. While the traditional image of underground organizations has been extremely hierarchical, new technologies as well as new configurations of conflict have produced different
organizational forms (Mayntz 2004). In particular, Jihadi groups have been said to move from
a hierarchical organizational model towards a more horizontal model.
Culture, frames, and narratives of violence
Prior research
Political violence is mainly symbolic: the cultural and emotional effects that it produces are
more important than the material damage. Social movement research has stressed the role of
cultural processes in the development of political violence, looking both inside and outside
radical organizations. Governmental policies and politics are influenced by the symbolic
struggles that evolved, in different public arenas, between a “law-and-order” and a “civil
rights” coalition (della Porta 1996). In Italy and Germany as well as in Northern Ireland and
the Basque Country in the 1970s, different political and social actors coalesced to form two
opposing coalitions: a law and order coalition asking for tough measures against protestors,
and a civil rights coalition asking for more democracy. Both used the media to address and
sway public opinion about legitimate forms of protest and acceptable forms of policing, thus
ultimately affecting both movement and state strategies. Generally, the emergence of protest
increased public concern for law and order, prompting the more conservative elites to choose
hard-line tactics, but, at the same time, demands for a more liberal understanding of citizen
rights also spread in the society. The development of political violence then may be seen as a
force that polarizes the debate on democratization, often resulting in a weakening of the civil
rights coalition.
The ideas that different groups use to characterize their positions and justify their actions
are often analyzed by social movements scholars as “frames” that define the problem, identify
protagonists and antagonists, and point to particular lines of action. Various frames may be
constructed by both elites and social movements, in order to mobilize support for their chosen
course of action. They derive their explanatory consistency and emotional power through
Qual Sociol (2008) 31:221–230
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narratives or stories that connect the group’s collective past to their present situation. The
clash of these cultural frames is an important aspect of the analysis of how violence escalates.
In cases where a consolidated democracy was absent, the frames that political elites used to
define the “dangers” of protest, and that activists used to define their rights harkened back to
“older” national traditions and conflicts. When the student movements emerged in the 1960s,
the governing elites of the young Italian and German democracies felt particularly endangered.
In Germany, recollections of the end of the Weimar Republic were often quoted in the press,
and the students’ “breaking of the rules” was compared to the political violence that preceded
the rise of Nazism. In Italy, the state justified its repression of the student movement by
appealing to “anti-fascist” sentiments. A similar dynamic was at play in the Japanese case
(Zwerman et al. 2000).
Cultural effects have also been analyzed within social movement organizations themselves.
Feeling excluded from the political system, social movements in these same historical cases
escalated their demands, with both the elaboration of radical frames of meaning and a
revolutionary rhetoric, and the development of a meta-conflict about the very nature of
democracy. The evolution of the conflict from the social to the political sphere offered
social movements the possibility of building larger alliances. However it also threatened
their adversaries, who read the demands for expanded democracy as attacks against
“democracy” itself. The hard-liners therefore gained momentum and pushed for a style of
policing that increasingly alienated the activists from the state (della Porta 1995).
The Italian activists claimed they had to carry on their fathers’ Partisan movement against a
“fascist state,” a movement that according to them the Old Left had abandoned. The German
activists asserted that they had to resist with all means the new “Nazi” state to avoid repeating
their fathers’ mistakes and redeem their shame. In Ireland and the Basque countries, the ethnonationalists resorted to the long-standing narrative of oppression of minorities: the Catholic
religious minority in Ireland or the ethnic Basque people in Spain. The transition agreement
was not sufficient to legitimize a Spanish State in the Basque country, which accused it of
following the Fascist tradition established during the long-lasting Francoist regime of resorting
to torture against Basque patriots. Similar memories of colonial rule fed the conflict in
Northern Ireland.
Specific narratives are used to legitimize violent action during the process of organizational
competition within social movements as well as within the overall protest cycle. In Northern
Ireland as well as in the Basque countries the narrative of previous waves of armed insurrection
against the English and Spanish occupants re-emerged in the 1970s. Nationalist narratives are
also used to justify other forms of nationalist violence, being “certified” by powerful actors
(Demetrious 2007). Violent organizations of the extreme right motivate individuals to action
through discourses that provide followers and potential followers with rationales for participating in their organization (Bjorgo 2004). In the rhetoric of the extreme right, the superiority of one race, religion, gender, or sexual orientation over others (O’Boyle 2002 p. 28),
religious fundamentalism, or ‘blood’ and ‘honor,’ are some main justifications of violence
(della Porta and Wagemann 2005).
This does not mean that political violence derives directly from the presence of ideologies
that justify violence (Snow and Byrd 2007). In Italy and Germany, radical ideologies
engendered radical violent repertoires only when political opportunities triggered escalation
(della Porta 1995). In Ireland, as mentioned earlier, changing political opportunities affected
the shift from a civil-rights to an ethno-nationalist discourse (Bosi 2006). For this reason,
social movement research focuses less on very broad ideologies and more on the specific
frames and narratives that arise in a particular situation, and how changing political
opportunities affect their appeal.
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New challenges
The research on recent waves of political violence can build upon this knowledge, addressing
some emerging narratives. While in the past the discourses were more classically political (left–
right or even ethno-nationalist), and therefore easier to address within the traditional categories
of research on social movements, nowadays the use of the “clash of civilizations” metaphors
used in different forms by different actors require some new reflections. Various religious
narratives have been used to justify violence (Juergensmeyer 2000). With reference to religious
fundamentalism and its radicalization, it has been remarked that culture provides a “tool kit”
of concepts, myths, and symbols from which militant organizations could selectively draw to
construct strategies of action (Hafez 2003). Although differences in religions per se are hardly
a genuine source of political conflict, their content can shape conflict behavior in the direction
of either escalation or de-escalation of violence (Hasenclever and Rittberger 2000).
Micro-dynamics: Militant constructions of external reality
Prior research
Research has demonstrated that organized violence and the groups that specialized in violent
repertoires developed gradually. It was during the fights with right-wing radicals and/or the
police that a number of radical organizations such as Lotta continua in Italy and the “blues” in
Germany constructed semi-clandestine structures, established specifically to plan and carry out
violent actions. The research within the tradition of symbolic interaction, later revisited within
the cultural turn in social movement studies (Johnston and Klandermans 1995; Jaspers et al.
2001), has helped to single out some micro-dynamics of escalation, focusing especially on
the ways social movement activists perceive and construct their social reality.
State repression as well as internal competition affected social movement activists through
cognitive, affective and relational mechanisms. First, state “repression” created martyrs and
myths: for example, the killing of Benno Ohnesorg by police during a protest against the shah
of Iran’s visit to Berlin; or Bloody Sunday in Northern Ireland; or the “battle” with the police
in Valle Giulia in Rome, which took on a legendary quality for Italian activists. Police actions
of this sort delegitimized the state in the eyes of the activists by creating “injustice frames”
(Gamson et al. 1982). Moreover, state repression encouraged secondary deviance, the
individual’s even stronger commitment to his or her deviant behavior—which brought about
a radicalization both of people who are directly hit by repression, but also the activation and
radicalization of supporters. Cognitive, affective and relational mechanisms accompanied the
activists’ descent into the underground, but parallel mechanisms also affected deradicalization (della Porta forthcoming).
New challenges
Reflection on this dimension in the social movement tradition is certainly helpful for future
research, but new waves of political violence nevertheless bring some challenges to the ways
in which processes of individual radicalization have been addressed. Research should
address, in particular, individual paths of protest escalation in non-democratic countries as
well as in development of religious types of commitments—fields that are rarely analyzed
within a social movement perspective. Additionally, while past research focused on “vicious
circles” of radicalization, empirical analysis is needed on the contributions of social
Qual Sociol (2008) 31:221–230
229
movement activists to processes of de-radicalization and mobilization of groups in civil
society such as unions and local organizations in pushing political parties to find peaceful
solutions.
In conclusion, even though social movement attention to political violence has been
discontinuous, there are nevertheless some interesting contributions that could help shed light
on emerging waves of political violence. At the same time, however, more reflection is needed
in order to adapt existing tools to address some new characteristics of recent processes of
radicalization, and for the filling of gaps in the social science literature.
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Donatella della Porta is Professor of Sociology in the Department of Political and Social Sciences at the
European University Institute. Among her recent publications are Le Ragioni del No (with Gianni Piazza),
Feltrinelli 2008; The Global Justice Movement, Paradigm, 2007; (with Massimiliano Andretta, Lorenzo
Mosca and Herbert Reiter), Globalization from Below, The University of Minnesota Press, 2006; (with Abby
Peterson and Herbert Reiter), The Policing Transnational Protest, Ashgate 2006; (with Mario Diani), Social
Movements: An Introduction, 2nd edition, Blackwell, 2006; (with Sidney Tarrow), Transnational Protest and
Global Activism, Rowman and Littlefield, 2005.