Historically every creed was into killing for one reason or another before there was Islam/Muslims.But I agree that Muslims have been and still are seemingly obsessed with killing other Muslims. Seems to me their invasions/killings lead to the killing in the crusades didn't it? Anyhow most of the world came to their senses and repudiated killing for religion. Religion and social order became enlightened, law and order progressed, the Magna Carter, Reformation. Yet not in Islam?