One of the reasons that Commissar was initially banned in the Soviet Union was the use of religious imagery in the film. One example of this is shortly after Vavilova, the Commissar, has her baby. She walks by a graveyard, and the Russian Orthodox crosses are prominently featured in the shot. This can be interpreted to mean that Vavilova was forced to carry the baby, which she initially considers a burden, in the same manner that Christ had to carry His cross. It could also symbolize the idea of a life cycle, where Vavilova just had a child and is then seen at the cemetery, where she is surrounded by death. Another instance where crosses appear in the film was when Vavilova, Yefim (the father of the Jewish family she is forced to stay with), and his family were boarding up the windows and doors to prepare for the White Army soldiers that were coming. In one shot, Yefim is nailing a beam across a window, perpendicular to another board which clearly makes the shape of a cross.
The other major example of religion that can be found in the film is when Vavilova travels to the priest, and then to where the synagogue had been. She does this in order to have her baby baptized, or recognized in the Jewish religion. This would not have sat well with Soviet censors, seeing a strong female Commissar traveling in search of someone to baptize her child. I found this scene particularly moving because it seemed that Vavilova simply asked the priest for directions, and would rather have had her baby brought up to be Jewish. This shows the positive impact that Yefim and his family had on Vavilova during her stay.