What does ‘severity of injury’ have to do with how one side went about riling up a lynch mob to take down half the high school? All because their precious kid voluntarily went into a fight and came off badly from it?
You realize what this kid is learning, right? I can get into a fight any time. If I win – great. If I lose, my extended family will use all their clout to take down any and everyone who did not protect me from my own decision.
There is a well-established term for that kind of situation.