TT has a point.
I just disagree that their behavior affects you. Motorists will hate cyclists for one reason or another, so don't blame it on the kid riding through stop signs on his brakeless fixie. They hate the roadies decked out in spandex riding 4 wide on 55 mph rural roads too, but I don't see anyone going on a tirade against spandex or carbon road bikes.
Let people ride, and worry about your own safety.