I do agree with the things you say. Those Arab countries have a different social structure than most countries. They have tribal leaders and religion leaders.
Maybe in a way they are gang banging, like street gangs do when they kill each other. Even Americas history is full of this behavior now, and also in the past. We used to have Irish and Italian gangs that would kill each other. Then we had Al Capone who used to just slaughter people.
America also had the ku klux klan, these killers were some of the biggest evil slime balls in all of history. The KKK would hang and kill black Americans, just for walking down the wrong street. History has hidden the evil crimes of the KKK.