Admit only minority people into the Police force. Problem solved. If a Policeman kills minority unlawfully then it's just minority on minority crime so nobody will care.
https://www.rutgers.edu/news/bad-policing-bad-law-not-bad-ap...
That's the data, not my opinion.
The system can be racist even if its constituents aren't. It shouldn't be a new or unfamiliar idea to anyone here that complex systems can have unexpected outcomes, biases, and emergent properties.
Further reading (I'm not typing all of this again):