If we measure police brutality in terms of where police kill the largest number of unarmed individuals, without the officers being held accountable, the top five cities are:
New York (New York)
Phoenix (Arizona)
Los Angeles (California)
Jacksonville (Florida)
Chicago (Illinois)
5 Worst U.S. Cities for Police Brutality | Excessive Force Natl Epidemic
Cities with highest amounts paid for civil rights lawsuits against the police.
Our former President wrote this very recently:
The elected officials who matter most in reforming police departments and the criminal justice system work at the state and local levels.
So I'm pretty sure all the posts on police brutality aren't doing any good, unless the readers here are voters in the cities listed above. That's where the big problems are and where local governments need to be held accountable for them. The Federal government has very little sway over local Police departments.