This may come as news to you, but in the state of California, bicycles are considered vehicles and they have every right to share the road with cars and motorcycles (so do wheelchairs and those nifty little scooters you see old people tooting around on, but we're talking about bicycles here and I don't want to confuse you any more than you already seem to be.)
Now, when I am on my motorcycle and there is a group of bicyclists ahead of me at a stop light, I am not going to crowd them. I am not going to rev my engine to make them take off at the light as fast as they can, and I am certainly not going to try to blow around them. They have every right to be there, too.
What I will do is protect their lane space by staying a little bit behind them at the stop. When the light goes green, I am not going to engage in a jackrabbit start, and neither will I blow past them, even though I have enough room. I am going ride safely behind them until they have crossed the intersection, and then I am going to ride slowy and give them time to get past the cars parked at the side of the road, so that they can get into the bike lane. Then, and only then, will I speed up and pass them.
So...get off my freaking back tire and quit trying to press me into pressing them to get out of the way. If you won't protect their right to be on the road, then I will.
The Rider Of The White Rebel That Went 15 Miles Under The Speed Limit A Lot Longer Than She Needed To Because You Were Pissing Her Off.