From the Wall Street Journal news section:
A handful of neighborhoods with histories of violence are the primary source of a recent surge in killings in Chicago, New York and elsewhereBy Jon Hilsenrath and Joe Barrett
May 8, 2021 12:01 am ET
A murder wave in U.S. cities that started last year is carrying forward into 2021, and a growing body of research shows a pattern behind the rise: It has been concentrated in relatively few poor neighborhoods, typically Black and Hispanic, with persistent histories of violence.
Maybe the reason is because the murder surge has been concentrated among blacks?