Please report dangerous drivers to the police - Roadsafe. Report to plod, not just whinge here.

Words exchanged and then it ended with him saying "have this", swiping my front wheel and taking me out and then riding off.

Sounds awful - really sorry to hear about that :(

you don't know the other person and they could be bat shit crazy and do something worse.

This is something I've taken to telling myself. Sound advice. On the occasions that I haven't listened to myself, things have never improved.