Reminds me of my favorite story. An old lady exited a grocery store in East Detroit about 30 years ago. Young knuckledragger decides to snatch her purse. The old lady had a strong hold on her purse and was fighting the knuckledragger. As the news story put it, an older gentleman in an old non-descript Buick stopped his car, got out, pulled a small revolver from his pocket and fired a single shot into the knuckledraggers knee. Without a word, he got back in his car and drove away. The old lady liked up her stuff and left. When the police arrived, they found the knuckledragger holding a bloody kneecap.
Judging by the location, action and description of the car, I’m 100% certain the shooter was the father of an old friend of mine.
Just think, assuming he’s still alive, that knuckledragger still thinks about that encounter often.