''They weren't raped, robbed and massacred for being non-Christians, but were raped, robbed and massacred for being savages by Godly raping, robbing and massacring Christian savages, derp''
Christian Rome created Christianity, so um, kinda yeah a lot.
Medievel Europe not only killed non-Christians, but came up with werewolves, witches, vampires and whatever else they can call non-Christian to kill for being non-Christian.
This Inquisition only tortured and killed Muslims and Jews for the sole purpose of making Spain Christian-only, that's all.
European colonists planted two flags, that of their crown and that of their Lord Jesus. Then they proceeded to rape, rob, and massacre in the name of...