Stalin

@Harry, it is evident that Marx never spoke of mass exterminations. He is a madman; the fact that he was a communist is secondary. The difference between H. and S. (let's reiterate obvious things for those who do not understand) is that the former is simply insane, while the latter at least got some things right politically (Russia became one of the world's great powers also thanks to him, Germany collapsed into a pit... see World War II); however, that does not make him a good person.