You're taking one outlier case, and citing it to imply that most police are racist killers.   That just isn't true.

What is true is that police shoot more whites than blacks.  And that when police do shoot blacks, they are invariably breaking the law and resisting arrest.

It's also true that violent crime is far higher in black neighborhoods than in white neighborhoods.

And it's also true that BLM only focuses on the police trying to keep order, and not on the huge number of black on black crimes.