I used to work as a police dispatcher, and in my opinion, most cops are good guys/gals. There are a few dipsticks out there (who tend to be the ones making the news), but most of the time, cops put up with a very difficult, stressful, and dangerous job.
I have a few stories of my own, but these were dealing with cops in the district I used to work in. Still, I only worked there for a couple months, and these were years later.
Once, I forgot to pay for gas at the gas station. I completely didn’t realize it until I got a call at work. The officer was nothing but polite and nice about it. He asked me if I had gotten gas this morning at a particular gas station. I said I had, and thought about it, and said “Oh my God! I forgot to pay, didn’t I! I’m so sorry!” I got really nervous and concerned, but the cop just kind of laughed, and said it was OK as long as I paid them back. I asked them if I should leave work right now or if it could wait for lunch. He said, “Oh, lunch is fine, or after work. Just sometime today.” He asked me if I was a former dispatcher and then chatted me up a little bit. 
The second time, I left my apartment for work one morning to find that someone had parked me in. Now keep in mind this was a pretty normal apartment parking lot. There’s parking down the left or right, or you drive down the middle and there’s space for two cars. Some idiot had parked a truck and trailer in front of all of the cars on one side. (!!!) After honking a few times and waiting a few minutes to see if he “just ran in”, I called the apartment complex folks. They came over and we noticed that their temporary license plate was clearly forged. We called the cops, and it quickly turned into a huge clusterfuck.
The cops came by and looked at the vehicle, and apparently it was owned by some wanted guy. More and more cops started showing up, along with a tow truck, but they didn’t want to move the car or whatever. I just stood around watching, got asked a few questions. Finally, a cop showed up I recognized and I waved. He smiled at me but was busy. He started interrogating this woman who another cop had brought to the scene, asking “Why did you lie to us?” and she’s bawling “I’M SORRY!” It turns out she lived nearby and her son was wanted, and was visiting her. (Apparently the smartest thing to do as a wanted criminal is to park a bunch of people in so they can’t leave. Dumbass.) They had gone to her apartment earlier that day and she had lied to him, and now they were confiscating the truck or whatever, and she’s just weeping. Finally I approached the cop and said “Look, I know you’re involved in a big mess here, but I’d really like to get to work if I can. Can the tow truck just move the truck a wee bit so I can get out?” He said, “Of course.” He put the questioning on hold, had the tow truck hook up and move the truck and trailer out of my way. I thanked him emphatically and bade him good luck. What a mess.
Granted these were kind of special cases. However, I used to ride along and I would routinely see cops rooting for people to avoid tickets – “Slow down, man, you can see me, I don’t want to pull you over”, or trying to help women in abusive relationships, or gleefully returning stolen goods to their rightful owner.
