STUDIES:
373/
“60 percent [of black adults] reported that they or a family member have been unfairly stopped or treated by the police because they are black… 31 percent reported that they have avoided calling the police because of concerns of discrimination."

Discrimination in the United States: Experiences of Black Americans
Health Services Research
Vol. 54 Issue S2, pp. 1399–1408,
2019
Comment on this study on its Twitter thread.