Stalin was the most prolific mass murderer in history and he did all his killing for the promotion of communist ideology.
Stalin was the most prolific mass murderer in history and he did all his killing for the promotion of communist ideology. Actually, Stalin comes in second to Hitler.
From: Twentieth Century Atlas - Death Tolls
The Black Book of Communism seems to vote for Hitler as the answer to the question of who's worse, Hitler (25M) or Stalin (20M).