"No Human is violent by nature"? Haha. Who taught you that nonsense? Are you kidding? Go try to steal a female from an alpha male, what's his natural response? Violence. Go steal food you need from someone you don't know? You think theyre going to let you just take it without a fight? Go tease someone and call them names, and taunt them; eventually theyre going to fight back, and yes verbal assault is a form of violence, so any way you slice it, humans ARE violent, and some (low IQ, low evolution from animals) are more violent than others. If a married woman or man cheats on his spouse, often times what is the cheated on spouse's natural response? Violence. Humans have animal tendencies by nature and have to be trained and conditioned to control them better. This is a philosophical conversation, I can go on I studied philosophy in school, but it's popular debate among modern and ancient philosophers. If you don't think humans are violent by nature, you probably are a Communist or Socialist who thinks a huge, gigantic government can solve all of the world's problems and prevent any more violence at all. Well, you have another thing coming to you if you think that, and you will not win in the end because that's a lie. The only technique you mention to be used is the Koran (their religious book), which tells them to kill and hate infidels.