Maybe Critical Mass have a point

OK; you have a two lane, one-way street. One lane is for turning left, the other for turning right. To the left is lots of traffic, so the left lane backing up all the way down. The right turn is moving freely. So what do you do? You drive down to the end in the right lane, and then try to force your way left and avoid the queue. Thus totally blocking the RIGHT lane as well. If you're a selfish, annoying prick, you do, anyway.