I guess some folks just look guilty.
“In cases with no blacks in the jury pool, blacks were convicted 81 percent of the time, and whites were convicted 66 percent of the time.” — Duke-led study on “The Impact of Jury Race in Criminal Trials.”
See the John McNeil case from Georgia and the Tyrus Coleman case from Indiana. In both cases, the defendants were black, claimed self-defense, and were convicted for shootings that occurred on their own property. I don’t know about the McNeil case, but there were no blacks in the jury pool in the Coleman case.