I hate to play Devil's advocate here, but I see both parties as guilty in escalating things until contact was made. I think that's pretty much what Office Flapjack was telling you. Yes, he hit your car, but there was some provocation. It's kind of like yelling at a dude telling him to hit you and then when he does, saying, "Shit, that guy just punched me!" Just my opinion from the outside in, and not saying that I haven't been guilty of fucking with an asshole driver myself. I'd just get the mirror fixed and go about your business...