Most of you have fallen into everton's trap of considering only religious wars and have forgotten his heading of "Atheism's biggest lie?"
Most of the evils caused by religion have not involved war. The Inquisition, the Crusades, the burning of heretics, the witchhunts, the suicide-bombings, the 'honour killings' , the circumcision of women, the demand that all infidels should be beheaded, and so on, have had nothing to do with war but are the direct result of religious belief. Without religion they would simply not have not happened.
Such things are not the invention of atheists, so in what way are atheists "lying"? Even the ultimate atrocities committed by the Old Testament God were not invented by atheists, but by the Jews themselves!
Atheists do not kill people because they are atheists or because they cannot stand other who people who are not. Neither are there wars between different sects and cults of atheism. They have nothing to kill or war about, since they have reason, logic and commonsense on their side.