Just laugh it off and use a little humor and it goes away. Your name wasn't randomly drawn out of a hat. People seem to argue with you because you argue back and in a way that comes off combative and uptight. You're obviously the common denominator.
I have no real beef with you, feel free to play the victim of some imagined posse. Most people are capable and do establish their own opinions and this is the persona you're carving out for yourself IMO.