Except for the ones who do it in the name of Islam...most mass killers are Atheist or irreligious. Columbine shooters, Holmes, and that nut that shot the senator a few years back. The guy in the Netherlands that killed a mass of kids at a youth camp was self-described irreligious. Jim Jones was an atheist. And just last week in Oklahoma a two brothers...one of which who had described himself as not believing in religion, killed five of his family--his mother, father, 5 year old sister and 12 year old brother.
I don't know of any Christians who killed in the name of Christianity---not sure any shooters recently have described themselves as Christians.
But in the name of Islam....in worship of Allah...men are killing gays by throwing them off buildings in front of a roaring crowd. And its just ho hum to you. I find it interesting.