If Flock wants to be used by public services, it should be subject to maximum transparency. If you don't want your camera locations public, don't offer them to the public for their use.

IMO, when they have to hide, that's the beginning of the end. Too many people are aware of the what/why now. And above all else, once the tables turn on elected officials and they realize they're under the same surveillance, I bet their tune will change (likely due to a public egg-on-face moment involving illegal or suspicious activity). If people keep the pressure on, this will be a "remember when" rather quickly.

Could the map's creator be held liable if Flock can demonstrate this map in particular was used to destroy cameras?

I still want to see a driving game, perhaps using Google maps, where you try to get from point A to point B and not pass any Flock cameras.

I would like to point out that the website in question has a button to download the entire dataset. Probably would be a good idea to save a copy.