STUDIES:
793/
“Even if white and non-white citizens use drugs at the same rate… disproportionate contact with the police would predict that black citizens would be … arrested for drug crimes more often… To reduce racially disparate stops… change how neighborhoods are policed."

Reducing Racially Disparate Policing Outcomes: Is Implicit Bias Training the Answer?
University of Hawai’I Law Review
Vol. 37, pp. 295–312,
2015
Comment on this study on its Twitter thread.