My experence with the police has been fairly positive. Granted, I have fairly light skin, tend not to speed, and don't drink, do drugs of any kind, and wear my seatbelt.
But I have been pulled over for driving with a 'rusty license plate' and driving too slow on the interstate (while trying to get off at my exit). I have been pulled over for not having my lights on on an extreamly well lit street in the twilight hours. I had someone in my car with 2 warrents on him. Not fun. But no tickets. When my car got stolen, they recovered it a few hours later. Another time a group of friends and I were locked out of the car, and an officer quickly came to help.
That video did make me sick, I must say. I agree, there are some things that are not 'illegal' but are still private. Dignity should be respected. I don't know the rulings of the current courts, but the 4th ammendment should still apply inside your car, even on a public road. The tasering was excessive force. To be honest, I am shocked the didn't plant anything after a beatdown like that.
Just keep in mind, the cops in the Rodney King trial won.
And yes, the priorities of these officers do seem skewed.
And now for an anecdote: I once had a conversation with a conservative black man living in a predominently white neighborhod. He not only didn't mind being questioned by the cops on numerous occasions, but he relished it, saying that it is a police officers' job to investigate things that are out of place, and he was something that seemed out of place. I didn't agree with him, as I think personality profiling is much more effective, but it was a of a conversation to have with someon.