What's with the Christian imagery?

I admit, much of the symbolism in this movie, as well as Bakshi's other movies, is brilliant, though some of it is also odd and difficult to understand.

Why is it that the weird Neo-Nazi revolutionary group run by slimy reptiles is surrounded by religious imagery? They don't seem to have any religious pretentions that I was aware of. When we first glimpse the graveyard, for instance, we see only the silluhettes of crosses (three at first, that remind us of Golgotha), then that huge cross in the background of that scene where Harriet tries to urge her rabbit boyfriend to leave and is beaten.

I noticed a similar parallel during that scene in Heavy Traffic which was meant to be a hallucination of Angie's, except that one was even stranger.