Race Gap (IMAGE) University of Maryland Caption By the end of the century, nearly 30 percent of the largest US cities had black homicide arrests rates that were more than 10 times higher than white rates. Credit University of Maryland Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.