Oh yes, sounds like a case of 'righteous jackass'.
When I was in Uni in Newcastle there used to be so many miserable people on the metro just staring at me(i guess because I looked/dressed different) so I would just stare back. Mash up my face or make a stupid face.
Didn't care really I would probably never see them again anyway!
Some people are just unhappy with themselves so they feel a need to be a dick all the time.