When do the 9 seconds reset? Is it 9 seconds groping and 1 second break? Just asking because there's probably a bunch of people that would like to wait in a line to meet that judge.

This is the way.

I only punched him in the face for 9 seconds, I'm good.

"Old white man in position of power rules that old white men in positions of power can do whatever the fuck they want to."

It's not rocket science.

Ich wundere mich was passiert, wenn er nicht gekündigt wird. Jugendliche können interessante Reaktion haben. Vigilante steht da vermutlich auch gut weit oben auf der Liste, wenn das Thema an der Schule hochkommt.

Die Schule sollte also schauen, dass sie den Typen loswird. Wenn die das schon nicht aus den richtigen Gründen machen wollen, dann wenigstens "zu seinem Schutz" oder so nem scheiß.

If this is legal there

Not criminal doesn't mean legal. I'm not a lawyer and not versed in Italian law at all, but in general and especially in continental Europe you have quite a bit of things that aren't allowed but don't carry a punishment. To take a less loaded example: Here, in Germany, if you have your rowing boat at an isolated lake and I decide to borrow it without your permission, I would be breaking the law, but I would not be committing a crime. It's not theft because I wouldn't have any option to keep the boat and apart from that there's no crime to be considered.

In practice that means I wouldn't need to fear arrest, but you could still sue me for damages/rent for the boat and you very much could take measures to remove me from the boat if I were on it and refused to return it after being asked to do so.

Please don't do it without asking an actual lawyer first, but my guess is that in case of groping in Italy and after exhausting the nice methods like of simply removing the hand until second three, you could probably resort to punching in the face in second five and be covered under self-defense.