I agree,Alejandro. I think human history in general is covered in blood. It's a romantic notion there might have been an entirely peaceful and enlightened lost tribe but it's difficult for me to buy that when even the most advanced and supposedly progressive civilizations built themselves atop of wars and dead bodies.
I think every ethnic group has its' "bad people" and every ethnic group has its' "good people" too! Thus we cannot put everyone in a single barrel. We have to judge the individual. It's really the only fair system.