The kids defiance or the cop's response?
My experience was that some case of a kid's defiance was almost a daily thing.
Staff members had to restrain students who were fighting multiple times in a month.
Our SRO had to get physical once or twice a semester.
It turns out this cop probably did nothing wrong. More videos show more of what was really happening. That, coupled with the back story gives one the impression that this cop was just takin’ out the trash. Not a firing offense.