This nonsense is built on the #BLM movement, which is in turn built on the lie of “Hands up, don’t shoot”, the Michael Brown shooting in Ferguson, MO, which was richly deserved. And cops don’t shoot blacks out of proportion to their criminal acts, and it is the black community that is hurt the most when police stop policing because of #BLM-related pressure.
For good writing on the subject seek out Heather Mac Donald. Here is a series of articles she wrote for The Volokh Conspiracy.
Police Shootings and Race
https://www.manhattan-institute.org/html/police-shootings-and-race-9080.html
Academic Research on Police Shootings and Race
https://www.manhattan-institute.org/html/academic-research-police-shootings-and-race-9085.html
The Ferguson Effect
https://www.manhattan-institute.org/html/ferguson-effect-9089.html
More on the ‘Ferguson Effect,’ and Responses to Critics
https://www.manhattan-institute.org/html/more-ferguson-effect-and-responses-critics-9092.html
An Urgent Desire for More Policing
https://www.manhattan-institute.org/html/urgent-desire-more-policing-9098.html