Having bad manners and not standing when an elder enters the room is a whole lot different than turning feral.
May I point out “flash mobs” or “slap”?
Different cultures, different times... I seriously doubt that the ancient Greeks would put up with the behaviour we do out of our young today, without selling the miscreants into slavery, or outright killing them. Life was a bit more brutal and “in-your-face” back then.