Reality check. 9 times out of ten, you're way better off just being a good little citizen and co-operating. Cops are people, and you get better results by playing nice.

If you get stopped randomly by a cop, just show your ID and tell him where you're going. They can arrest and hold you if they want, and the chances of you suing are pretty low. They have the power, and you don't. The place to assert your rights is in the courtroom, not when you can be arrested and or beaten for acting proud.

Don't be these guys

https://youtu.be/hz28DDlnKn0