When a driver blows through a red light, he's
sacrificing the safety of others for his own speed even more than the
already high baseline of driving. That's worse than when a bicyclist
blows through a stop sign (assuming no pedestrians are around) not
because bicyclists are morally superior, but because the bicyclist's
behavior makes everyone slow down, which makes everyone safer.
And
when pedestrians jaywalk (assuming they are not oblivious to their
surroundings) they make both bikes and cars slow down. And that's a
great thing.