It comes down to poor parenting, not ehtnicity or race or religion.
Look at the Tea Party folks - what a mob! Different religions and no religion, different ethnicities. When they encountered a couple liberal reporters or whatever, did they smash them down or start a riot?
They did as they were brought up - human dignity. In fact, that’s why they were there.
Human Dignity was why so many were at Farakan’s “Million Man March”, - hence no riot or violence.
When punks gather - (punks - poorly parented folks) - violence can happen as they do not adhere to value of other-humans’ dignity.
In the Middle East, I don’t know - either the parents don’t teach other-humans’ dignity, which is a hard one to believe - or lots of punks gather together for the cameras.
Look at the riots that happen after college sports. We’re parenting more and more poorly, accepting immoral behavior more and more as diversity and tolerance.
Diversity and tolerance should include sinners - not the sin! We’re doing it wrong.
In the middle east the morals are what you can get away with at the moment. Mohammad the Ideal man to be Used as an example was a slave owner/ rapist/ pedophile/ polygamist/torturer/murderer of enemies and critics/robber/Pirate /Lier/adulterer/cheat They make up rules that suit them. They bugger their little boys and sell their little girls.