Is it true that atheism has killed more people then organized religion?...

[Minimalist]

None of the chroniclers of the Crusades bothered to write down what Urban said until some 20 years later. Still, it's all we have and they were at least closer in time to the events they described than the so-called "gospel" writers were. Fulcher was also present when Urban spoke...again, an improvement over xtian bullshit which was made up much later.