It is just common courtesy to be polite to someone. These guys are A-HOLES
PERIOD
To come over and gang up on someone they don't know and rip apart his car is messed up.( even if it was a POS) They didn't even have the manners to apologize for being rude after the fact or even wave.
H2Oman and I saw the most awful one off Cobra at a local car show and we were as polite as can be to the guy. He is very proud of the car and we were impressed buy his enthusiasm and would want to help him find vendor he is looking for or even cruise with him.
But aholes with attitudes can go intercourse themselves.
You have a stronger will than me Bill to deal with pricks like that. I hope to learn from your example.