One is "right" - or wrong, only by pespective. i.e. My god is better than your god - who says I can (or have to) kill you.
Is it "Thou shalt not kill" or "An eye for an eye" ?
Why hasn't more than 5,000 years of recorded history taught us that killing those who disagree with us only settles who is left - NOT who is "right"?
It's kind of like the mentality of ...my father beat me and I'M ALRIGHT; ergo, I'll beat my kid too! (dammit!) - or
More is better, bigger is best, might makes right! -Ain't that America
YMMV -for sure.