Ah, there it is at last! The "Kids Are Bad" argument, a staple of any discussion involving children.
Funny how children are innately just terrors, yeah? I mean, why treat them with anything resembling respect or fairness when they're just intrinsically foul? But treat them like garbage and at least some of them will fall in line and pretend to behave.
Think about it - the adults don't have to waste time and energy being patient or compassionate, they can instead vent their collective frustrations about life in general on powerless victims who can't fight back, and it doesn't have any negative effect at all on the children, because they're already rotten so it's not like they can get worse! Win - win!
Just keep them toeing the line until they graduate and become someone else's problem - like the police, since they're all such trouble-making miscreants and the first thing most of them do is land themselves in jail, where they damn well deserve to be, eh?