For all we know, the kids could have been acting like that to him the whole year. Then finally he just exploded.
I'm not going to lie, what the driver did was great. Now maybe the next time the kids wants to say something like that, he will remember what the driver did to him. In no way was the driver going to intentionally hurt the kid. He just gave him a shake. And then the other kid had the balls to try and pick a fight with the old man. Unbelievable.