Because of course, riding around places where there are large numbers of pedestrians, and acting like a knob, is really going to endear cyclists to other people, isn't it?
Check the 'Fixie' video on the Charge website. Pretentious w4nky bit of music, too.
Make Fixies History.
'Oh, but look how cool and trendy we are!' Choccamoccalorrabollocks.
Come on; have fun, but don't act like a dick, and piss other people off. Bit of consideration for other people, please.