Kids today are feral? Are they? That's not my experience of my teenagers and their group of friends, nor that if people I know. There are teenagers that are violent etc but I'd say they were an exception as opposed to a rule.
Someone said above about a group of teenagers drinking and being aggressive. Whilst I have no doubt there are teenagers like that as I have seen them, my teen went out with a group of friends and they all tidied up after themselves and took all their empty bottles home.
I grew up in the 80s and 90s and there were some kids in school that were big trouble. I remember walking home and seeing someone getting their head stamped on by another kid in his year, they were both known trouble makers. Bit the majority of kids I went to school with were decent.
I'm just fed up of the whole teenagers = feral youths. The reason this and other cases where teenagers assault, main or kill are so shocking is because it's not the norm. It's not because we don't have the cane in school, because we gentle parent etc. it's because these kids are not given the lessons they need to be decent human beings. That's always been the case and will always be the case.