I probably went a little overboard with the inclusion of every religion throughout the history of man. But even if you managed to come up with a number of deaths caused strictly by religious beliefs, you would never be able to prove that a single religion is responsible for more deaths that Joseph Stalin. You would have to use many separate religions, and many separate events throughout the history of man to top what Stalin did in a mere 6 years.
menace-uk-
I was simply pointing out to you that atheism isn't a belief system that is somehow better for humanity than a religious belief system. Stalin was responsible for around 12 million deaths, and very cruel ones at that. Feel free to point out a single religious person, or even a single religion that tops that death toll.