Recording police-citizen encouters favor the people who play by the rules and disfavors those who don't. There are plenty of good police officers who have nothing to fear because they carry out their job with professionalism. But then there are the ones that prefer to not be recorded because they fear being held accountable. Those are probably the ones who need recorded the most.
For example, would you expect police harassment for washing your car in your driveway? Most people wouldn't. Most people wouldn't even believe it possible, but thanks to modern technology we see that it is:
In the movies, when police come calling, the ordinary citizen has two options: quake or pull out a gun.
In recent time, however, people have realized that they have a third, quite potent option: the cell phone.
They know that if they can film the experience, disbelief will have to be suspended, because the evidence is all too clear.
The latest example of a seemingly innocent man encountering a peculiar visit from a policeman comes from Long Island.
What the filmed evidence seems to show is a policeman wandering onto the man's private driveway and suggesting that it's illegal to wash his car there.
This is a subject I've addressed before. I think you can record the police in any public space so long as you don't interfere with their job. I also think that you have a Constitutional right to record your conversations even in a private place when you are the suspect. Read more below: