I'm retired, but have been a police officer with three different police agencies. The notion that the recent shooting of a black man by a white police officer in South Carolina somehow reinforces the notion that it goes on all the time based on racism is beyond dumb.
News flash! Police come in all races and both genders. Some police are felons who simply haven't been caught yet, as are some of every other vocation. It's a civil service job that once you pass the tests and get some training, you're on the street.
Society needs police, but doesn't need bad ones no matter the color or gender. What we really need to do is get unions out of civil service to protect the citizens instead of bad or dangerous employees.
Any civil service department head - like principals, police and fire chiefs - will confirm how hard it is to fire a bad employee. Now there's a murder by one of them. Let me finish by saying that most civil servants are good, hard-working people trying to do a job.