[dghlsakjg]

We just need to separate IA from the agency it is investigating.

Up here in BC, Canada, the office of the Police Complaint Commissioner is responsible for investigating policing complaints. They aren't associated with any agency, and have broad investigative authorities.

It isn't a perfect system, but it is far better than police investigating their own agency, or even police investigating other nearby agencies.

I also think that police unions need to go. They should be lumped in with other public employee unions, or just accept that a job that powerful does not need a traditional union.