A great YouTube channel going over interactions between police and people. There are lots of videos of people standing up for themselves and then going on their way; there are videos of people standing up for themselves, still getting arrested, then suing the police. There are also videos of people doing stupid things and getting arrested.
Hey, if anybody wants to pick up a quick PHD over at YouTube U, so they can offer unofficial, on-the-job training to law enforcement officers, I guess that's up to them. Personally, I would recommend that they install a flashing neon "LEO TRAINING EXERCISE IN PROGRESS" sign in the back window of their vehicle - just to let the officer(s) know what's happening. And (obviously), stay at the Holiday Inn Express, the night before getting pulled over...