I've never understood this indiscriminate hatred towards the police... They're supposed to be the people's allies, right? Of course there will always be people that don't do what they're supposed to do, or don't do it how they're supposed to... But you can't begrudge everyone for the actions of a few!
Because they live in areas where the police are generally bad. For example, I posted this when creeperton sparked conversation about this on byuu's board (he had gotten hit by a truck; D brought up a story where he got hit by a lady in the States, and the police made up a false statement supposedly written by him where he admitted to it being his fault, and signed his signature to it).
This kind of thing is actually rampant in bad areas.
For example, I lived in Ecorse, MI when I was a child. My mom did a small part-time job at a local video store for a while. An off-duty Ecorse PD officer had an account there, and brought a movie back. The guy had the movie out for something like...over a month worth of late fees. When my mom went to charge him the late fee, he threatened my mom with essentially the kind of thing that D was describing. He threatened to harass her, pull her over for no reason, etc if she didn't waive the late fees for him. The owner heard it in the back room, came out and gave the guy two free rentals for his "trouble".
I've also heard on multiple occasions that my mom had police officers threaten these kinds of things just for doing anything that would even remotely put them in a bad mood. Cops (at least the ones in the two bad areas I spent most of my life) tend to stick together, and be power hungry sons of bitches. My experiences hearing these things as I grew up (I was actually a witness to the first one) have made it so that I do not trust police in the least.
I've heard many stories firsthand where a friend or relative has done something to an off-duty copy that he didn't like (like the stuff with my mom, above), and the cop would threaten their way out of it: "You sure you want a member of the (city) PD pissed off at you? I sure hope you like your car being impounded", etc.
And it'd be different if these crooked cops would get caught and lose their power. But more often than not, they don't. It's another version of the Good 'Ol Boys club. They take care of their own, even if they know they're wrong. There are obviously exceptions, with some honest-to-goodness great cops out there. But this kind of thing happens more often than people like to admit, and it usually doesn't get brought to the public's attention because people are afraid of the consequences.