In 1955, after Emmett Till is murdered in a brutal lynching, his mother vows to expose the racism behind the attack while working to have those involved brought to justice.In 1955, after Emmett Till is murdered in a brutal lynching, his mother vows to expose the racism behind the attack while working to have those involved brought to justice.In 1955, after Emmett Till is murdered in a brutal lynching, his mother vows to expose the racism behind the attack while working to have those involved brought to justice.