STUDIES:
800/
“African American adolescents who lived in communities with more White residents became disillusioned with the police more quickly than African American adolescents who resided in more racially integrated or minority-populated communities."

A Life-Course Perspective on Adolescents’ Attitudes to Police
Journal of Research in Crime and Delinquency
Vol. 50 Issue 4, pp. 579–607,
2013
Comment on this study on its Twitter thread.