You don't get it. Evil, barbaric and violent atrocities are commited because humans are terrible beings. When raw human nature comes forth people do horrible things. Religion/Islam is not the reason. Religion is merely taken as the justification of atrocities. Now Terrorists take Islam. In the past is was often CHristianity. The reason why you don't see Christians in America engaging in honor killings is beause Americans live under a stable legal order. But it has nothing to with Christianity being such a peaceful religion. Because it is not!