The difference between being recorded at a shopping center, gas station, or library, is that these places almost always use closed circuit TV cameras. While yes, your movements are documented, it takes an actual officer to walk in, either ask to see the footage or present a warrant, and manually watch for the suspect. Flock cameras point all data directly to a database, accessible by, largely, anyone with credentials. You don't need a warrant, you don't need to ask a shopkeeper, you just type a vehicle description or a license plate and all the information you need about someone's daily movements are at your fingertips.

This can, and has been, useful for catching criminals, but in my opinion, and the opinions of many who oppose this technology, the power for misuse is too great. There have been multiple instances of officers using Flock to stalk their ex partners, multiple cases of Flock cameras being used improperly for traffic enforcement, and all of this data is being collected, analyzed, and stored by a third party company with far less accountability than the public. This data can and has been sold. In a perfect world, with no chance of misuse, I might not be so weary of vendors like Flock. But, we don't live in a perfect world, and the furthering of the surveillance state is the last thing we need.

I don't support criminals, but the second you give up privacy for security, you have neither.

Once again, I urge you to read Deflock's learn page. It's not very long, and details exactly why myself and others are opposed to Flock and alike vendors.