https://www.washingtonpost.com/graphics ... ce-system/
Huge number of studies, all with links to a bigger report on each.
Just the major section list is long:
Policing and profiling
Misdemeanors, petty crimes and driver’s license suspensions
The drug war
Juries and jury selection
The death penalty
Prosecutors, discretion and plea bargaining
Judges and sentencing
School suspensions and the school-to-prison pipeline
Prison, incarceration and solitary confinement
Bail, pretrial detention, commutations and pardons, gangs and other issues
The dissent — contrarian studies on race and the criminal-justice system