I disagree. If you confront someone by yelling, screaming and tearing off parts of their motor vehicles, then all they are thinking of is retaliation no matter what they did. Most times people don't even realize what they did wrong and never will if you tear off their mirror. Have you ever made a mistake while driving? Did someone tear off your mirror for it?

Officer, I had to run over that biker because that crazy s.o.b. had already ripped my mirror off and was trying to kill me. It was self defense.