Here's a great article from CityLab on what we actually do about the police system in this country. The first two initiative makes a great point about a great failure that has occurred over the last 10-15 years. The police in this country have whittled away at data collection of policy activities. This is huge because almost all of our innovation in policing comes from big data these days. However, the police themselves are not creating any data, so we have no reliable count on the number of police shootings, if they were justified, and if they went to a grand jury or trial.
Basically, we need more open policing. This does not put our officers in any danger, as it simply gives the public and researches the ability to identify trends in police involved shootings or deaths in order to stop them from occurring. It's a win-win for everyone.