Comment by jmalicki

I've been nearly hit by a bicycle-messenger looking dude in San Francisco when I was crossing the street with a "walk" sign at a crosswalk and he blew through the red light at probably about 15mph, and I have plenty of other experiences like that.

If you are running a red light at 15mph on a bicycle, dodging pedestrians, you are just an asshole - maybe you're slightly less dangerous than an SUV running a red light, but it is still completely not okay.

There are dumb teenagers, which is one thing, but the aggressive "well, we're not emitting carbon, so we can do whatever we want crowd" is probably even more crappy and dangerous, since they're deliberate about it, and more present in areas with lots of pedestrians.