I tutored a 15 year old kid who had already been convicted of manslaughter. He had a fistfight on a metal staircase. Connected with a punch. The other kid's head landed square on the metal edge of the stairs. One punch homicide. Kid's life had been on track to be a physician like his mom. That all ended with that one punch.
One of the many reasons that violence is a bad answer is that the public generally does not realize how easily violence can wind up in permanent injury or death.
Our friend Billy, died a year out of high school. Brain aneurysm. He had a bar fight. Got hit in the head. Did some brain damage. A year later a vessel burst...that was it and he died.
Public watches too much TV and movie violence. Gives them a distorted idea of the level of danger that violence can present. Life is not a cartoon. Bodies are fragile. Amount of force it takes to crack a skull, cause a concussion...much less than people might imagine.
Now a slap? No, a slap is not going to cause physical harm. But...then there is the counter. Or someone gets really upset and hires a goon to...and then the slap isn't a mild thing.