The punk threw a terrible punch when he went to swing at the old man. He couldn't have been much of a fighter. Probably why he was bullying old folds. If the old man did not need a cane to stand he probably could have beat the crap out of that thug.
I came out of a Reds baseball game one day and one guy was sitting on a mans legs and another was sitting on his chest punching him in the face. I looked around me and there were a couple other young guys and I said lets stop it. I took off and rammed the guy who was doing the punching of the man. I looked around and I was by myself as the two guys got up. Luckily I heard a whistle blow. I assume it was a police whistle. I did not wait around to find out. I had a long drive home and did not want to spend time in jail or anything like that.
Sometimes when you expect a little help, it never comes.