it's also possible that we're only seeing a few select departments fire their officers. there are no laws around this as far as I'm aware so enforcement is purely departmental policy. how many sheriff's offices and police departments do these audits and how many of them act on abuses?
you should need a warrant to monitor the products of mass surveillance and it should be as narrowly targeted towards a suspect as possible. or just not have any of the mass CCTV placements everywhere in the first place
I think we may be agreeing?
I'm in favor of pushing for police departments (and really any governmental body with access to any kind of data) to have regulations around access to that data, access controls to restrict illegitimate access, and monitoring to detect improper access by people who do have legitimate access but don't follow the proper regulations.
I think you're correct that we don't tend to see the instances where improper usage occurs, tautologically because those entities aren't doing their homework on the above.