The main thing is Man is a parasite biologically. The most parasitic cteature in the kingdom of animals. He lives off the backs of others. Hence slavery, conquer wars to get more slaves, theft  murders and all the other crimes . Actually all the crimes stem from human nature as a parasite. That's what craving for power is.  Marx was an idiot. When he declared  workers of all the countries unite he invented nothing new<br> Just a new class of parasites. Proletarians. Who turned out to be even worse parasites than those who gradually evolved.  Hence bloody Nazis and bloody commi and bloodthirsty fascists like Stalin