I don’t know of any, but Marxism seems to appeal to the downtrodden, the self described underdogs, people with no family or community connections. Losers. The Dunning Krueger effect plays a very large part. They believe they are smarter than they really are. Marxism makes them feel like big shots in control of what they cannot control, they have no sense of self worth, and are disconnected from their humanity. Every thing about communism is cruel and Inhumane and should be despised and rejected by any sensible caring human being. Socialism equals communism.