Anomaly? There have been vicious fights between your Middle Eastern immigrants & the locals for years on end in your nation.
Yes, and there are lots of fights in America too.
But they are not the norm here. I don’t claim to know if they are in America.
Just because unusual things get into the news, doesn’t necessarily make them common things.
The Cronulla Riots, for example, were pretty awful. They also took place nearly two decades ago now, and nothing anything like them has happened since.