The list includes both dense urban counties and very rural counties. But there seems to be a common denominator.
1. Critterden County, AR (Black 57%, White 40%, Latino 3%)
2. Shelby County, TN (Black 67%, White 35%, Latino 7%)
3. Wayne County, MI (White 49%, Black 40%, Latino 7%, Asian 3%)
4. St. Louis County, MO (Black 46%, White 46%, Latino 4%, Asian 4%)
5. Rapides Parish, LA (White 61%, Black 34%)
6. Jefferson County, AR (Black 59%, White 38%)
7. Newcastle, DE (White 55%, Black 30%, Latino 11%, Asian 6%)
8. Burnalio County, NM (Latino 51%, White 37%, American Indian Indian 7%, Black 4%)
9. Marlboro County, NC (Black 57%, White 39%, American Indian 4%, Latino 3%)
10. Washington, DC (Black 49%, White 38%, Latino 12%, Asian 5%)