"Haven't we all seen 12 ANGRY MEN? Hyperbole does not lead to violence." Aw, Robbie, now you have me missing Jack Klugman. He was quite the handsome man in his time, in his own way.
I was the youngest of many, back in the day were it was common for kids to be struck. I never got more than the occasional thwack on the bottom or the hand, but my elder siblings took more than a few ... I won't say beatings, but implements were involved, and on occasion there was a slap to the face for a disrespectful remark.
I don't know if I learned to avoid it by observation, or whether my parents were just too tired by the time I came along, but we all grew up to be very polite useful members of society.
This situation, though, is right out of bounds. In this occasion, I would have been right there with Patronus. I most certainly would have been arrested for my reaction after witnessing something like that.
Twelve Angry Men