Stalin managed to kill quite a few million people, so that's one important anti-religious figure if you're using (crass) "kill-count" as a statistic.

Also, Mao Zedong was anti-religious, and is estimated to have killed between 40M and 70M.

> Nor any of the dictators in the African countries.

Well, yes, there are horrific genocides and mass murders and atrocities in Africa supposedly in the name of religion.

I agree that evil is done by both atheists and believers.