I personally wouldn't want police to have access to Flock's data unless they have a warrant to follow the movements of a specific individual. If private organizations and citizens had at-will access to this kind of data it would be worse than a panopticon. It'd be a prison where every inmate is under constant surveillance, not just by guards, but by other inmates. There would be criminals using this data to track down and harass judges. Burglers using it to find empty homes. Rapists using it to track down victims. You name it.

Surveillance systems are, normally, a trade-off between privacy and safety. You lose one but gain the other. The reason Flock cameras are being torn down now is because they take away privacy while simultaneously reducing safety.