Well, SFPD is far from the worst big city force in this regard, but all forces have plenty of bullies -- they're attracted to the job.

For the most part, these cops have no interest in hassling cyclists. When orders come down from above telling them to "crack down," the girl working her way through school, or the guy who didn't clear the intersection fast enough for the cop's liking, is just a lot easier to stop and ticket than a full-fledged loony ninja. Even with modern technology and motorcycle officers, a determined fugitive cyclist is really hard to catch on city streets.