Robust examples of racial bias in capital sentencing was found and detailed in a new study by two economists, one from Harvard and another from Universita' Bocconi published this month in The National Bureau of Economic Research. The study examined the race of the defendant and of the victim(s) for all capital appeals that be came final in the U.S. between 1973 and 1995.
Researchers found an racial bias in capital sentencing if the victim was white and the defendant was a minority. Additionally, they found that the most examples of this discrepancy was in the Southern States.
Access the study here.