I've had many encounters with police, as well as fire department and paramedics. The only rude ones I've ever met we're paramedics. I've only had excellent experiences with police and fire department.

Well, kinda on the last one. I had locked myself in my T's bathroom and was cutting my wrists pretty bad. The police came first, but I wouldn't open the door, so they called the fire department. They broke down the door. I remember them peeking in halfway through to see if I was hurting myself. Once the door was gone several guys yelled "put it down!!" (The razorblade). I didn't, so someone grabbed my arm and took it. Then they dragged me out of the bathroom by my ankles and shirt. And then someone grabbed my arms and bandaged them up.
The paramedics were really nice that time.