Of course people want to hide things, it's human nature. Unfortunately, folks, what you do in public is public. Period. If you are in a public area, or where you can be seen from one, you have no reasonable expectation of privacy. It seems rather silly to complain about privacy violations when one acts publicly.
I can see no reason why a camera in a public area violates anyone's rights any more than a policeman watching from the corner. As a matter of fact, the camera is less likely to bear false witness, which is the only valid concern in this case.