Yes, because once every few years, you see a cyclist behaving like a d**k. As opposed to seeing drivers do it daily.
Some people have an irrational hatred for bikes and take advantage of any excuse to reinforce that belief. No, that doesn't excuse the behavior you saw but seriously, how often DO you see that?
I always get annoyed when cyclists flout the law by scooting through red lights or stop signs... even though I understand why they do it, especially when it doesn't matter (on the long end of a T intersection for example.