One of the things I have noticed about these criminals is that they justify their crimes by using classic progressive / egalitarian / socialist propaganda about the in-equality in the world.

I have suspected this as a consequence of Marxists ideology for a long time. I think that poison is responsible for countless criminal acts and vandalism. I can't prove that but it makes logical sense. I have spent time in many parts of the US and lived in several regions and anecdotally it seems like areas with more of a Marxist influence have more crime and vandalism.

Of course its not like I can blame this all on Marxism but it would be an interesting thing to study.