"My feelings as a Christian points me to my Lord and Savior as a fighter. Hitler 1922
I am now as before a Catholic and will always remain so. Hitler, 1941"
So obviously anyone who professes to be Christian should be jailed as a mass murderer.
That's what you conclude? Boy, that's dumb.
No, so obviously it's just as silly to blame Christianity for causing mass murder as it is to blame the theory of evolution for causing mass murder. There have always been and will always be mass murderers, and they'll use whatever rationalization they can to get away with it.