https://en.wikipedia.org/wiki/Great_Leap_Forward
https://en.wikipedia.org/wiki/Great_Purge
https://en.wikipedia.org/wiki/The_Black_Book_of_Communism
65 million in the People's Republic of China
20 million in the Soviet Union
2 million in Cambodia
2 million in North Korea
1.7 million in Ethiopia
1.5 million in Afghanistan
1 million in the Communist states of Eastern Europe
1 million in Vietnam......
And all of them overshadowed by the following:
150 million natives exterminated by the Catholics in the Americas in 16th century
100 million Hindus killed by Muslims during the Islamic conquest of India
90% of the Australian aborigines killed by the British Christians.
Religious people have killed at least 10x more people, when compared to the atheists.
You are very right, but mostly because atheism is simply another religion, like it or not. There isn't any person alive without religion of some kind.
Ask for sources BADecker don't say "you are right" so easily.
Best regards.