We need only white cops.
Cops shoot what scares them. Black cops shoot dogs, Islamic cops shoot empowered women, and white cops shoot niggers.
This will always happen. You can lesson it, but not stop it. But, in the meantime we need to protect the majority of the people you can. Since the majority in this country are white male Christians, we need to start only allowing white male Christians to be cops. That way they'll at least be shooting what scares most of us.
This is the best way to mitigate the problem.