"Flock Safety" is a company that makes "ALPR" cameras (automated license plate recognition, in reality they go far beyond just reading license plates), they've been getting a lot of attention recently because people are worried about privacy and abuse.

There's a bunch of articles about them here: https://www.404media.co/tag/flock/

I would also recommend Benn Jordan's YT channel, he has a couple of videos covering flock cameras. His latest one is: https://www.youtube.com/watch?v=uB0gr7Fh6lY

edit: grammar