What we need is a leak of a Flock database. Ideally, due to a security fuck-up by someone other than the jurisdiction that installed them. (Company itself, or another city doing Flock's warrantless search feature.) Having granular location data for an entire town's license plates should still be creepy and damaging enough that it gets these things torn out and replaced with something more thoughtfully designed. (Side…
With how poor Flock's own security is, using unauthenticated APIs for the vast majority of their service, and camera access points using hardcoded passwords, anyone who's even half motivated could have already done this.