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.
Evolution isn't being blamed for mass murder. Its said that evil people used the idea of evolution expanded into racial superiority to support their quest for ultimate power.
Like you say there are plenty of bad people throughout history. There are also plenty of hypocrits, in and out of a church.