The "what killed most people" in general is meaningless as you can manipulate it in a way to support any statement. And yet, there is some truth in ascribing a

The "what killed most people" in general is meaningless as you can manipulate it in a way to support any statement. And yet, there is some truth in ascribing a lot of violent deaths to communist circumstances, at least in the last two centuries. The fact that, as opposed to Nazism, in Communism killing others was never a direct aim, in practice human life somehow lost much of its value and people were dying in various ways, both individually in prisons etc., as well as en masse like in Holodomor.