Borrowing a line from Spiderman's movie, "with great power comes great responsibility".
A camera is a monitoring device which will help in recording a police officer's duty hours - a sort of real-time visual log, so to say. Sure, it will reduce crime on behalf of errant police officers. But my only fear is that like everything else, there will be loopholes and once they start using those loopholes, only the good officers will go by the rules when the camera is on. So it will be back to square one.
But of course, it is a good suggestion and it all depends on how it is implemented. It can be made an effective way of preventing crime by the police.
Good post, following for more!