The persistence of racially biased policing means that unless American policing reckons with its racist roots, it is likely to keep repeating mistakes of the past.
The Racist Roots of American Policing: From Slave Patrols to Traffic Stops — The Free Thought Project
Aisle C 
“… repeating mistakes of the past.”
“Mistakes” my foot. White Supremacy is built into the very structure of modern policing—worldwide.