Are the Christians in Lesotho and Zimbabwe only preaching abstinence, or are they actually handing out condoms and teaching people to use then? Even the former could easily be more treatment than their governments are providing, yet I wouldn't call it a good thing!

Hitler was a Christian, don't forget! That's why he wanted to wipe out the jews! Had he been an atheist, we might have been better off!

And no, those three don't have the top billing in history, sorry.

Not to mention that Stalin and Mao rarely killed people IN THE NAME OF atheism, did they? Compare them to the deaths in the name of the Christian = Moslem = Jewish god, and then what have you got?