Pfft! We get that in Portland now...
A huge percentage are frickin' snowflakes demand to be given the same rights and berth as automobiles, then blatantly violate every traffic rule there is. Worst part is when they blow off such things as, oh I dunno, signaling, then get mad when you have to slam on the brakes to avoid turning them into road pizza - then they look at you like *you* did something wrong. Then there's the complete disregard for traffic lights (oh, the light's red? Well I'm a pedestrian now, so screw you and give way as I suddenly pull out of my lane and ride across the crosswalk without warning!)
Mind you, a good share of bicyclists here are perfectly fine with obeying traffic rules, are are easy to share the road with. It's the massive percentage which behave like jackasses and (for instance) demand to use the middle lane (at 10mph) in spite of the really fat bike paths on either side of the road... the urge to turn them into road pizza gets strong, but that only makes them martyrs, and good luck getting a fair trial in this town should you hit one.