Officer involved shooting are a huge hassle

Business Insider:

'The most surprising result of my career': A Harvard economist found no evidence of racial bias in police shootings

This one is simple.  Cops are transaction smart, they  avoid the firearm as much as possible.  That aversion overwhelms any racial bias.  Instead they manhandle first, as that rarely causes permanent injury and seldom go to trial.  Why Blacks and Hispanic?  Because White and Chinese make the connection between better trained cops and higher taxes. So Whites and Chinese learn how to deal with barely trained cops, they know how to self police their own communities a bit better.

BLM and the Zuckerhead forget something, if you hire cops to double as social workers, their salary goes way up; they need a college degree.