They could raise the requirements to become a cop, and change the structure of organization.
1. Require at least a bachelor's degree in anything.
2. Nix all paramilitary training.
3. Make each cop civilly/criminally legally liable for for their third screw up.
4. Hire only people over 25.
5. Dissuade military personal, including veterans, from thinking they have a job waiting for themselfs after their stint is up. (We do not need miitiary trained soldiers. We need Sociologists, and Psychologists.)
6. Cameras should be on every cop, without a way to turn the devise off. (Any complaints could then be verified by a third party.)
7. Get rid of all out little police squads. A cops would be federally licensed, and trained. Preferably stationed where they are needed. In my county of Marin, most are not needed.
8. And let's be honest. Most Cops are just Revenue Collectors. They are not going to be there to save our lives. To anyone saying, there won't be enough people applying for the job. Come on? There are a lot of people whom would like to become Police Officers. It usually those people, people who just want an honest job, whom are not hired. Get rid of all the cowboys, and hire level headed people. Ban all high speed chases, unless it involves a kidnapping. Require all police to obey every road law we are expected to abide. Make all uniforms Orange, or Pink. At least we could see them comming, and the bright colors might make the right people apply?
9. I'm not going to debate. I'm sick and tired of looking in my rear view mirror, or trying to figure out what hedge they are hiding behind. I'm as white as they come. I can't imagine what minorities have to put up with.