Street vice (anonymous prostitution, gambling, and the sale of illicit drugs) is spatially concentrated and confined largely to Black neighborhoods in central cities, even though demand is quite evenly distributed throughout the general population. We show how this pattern can arise through the...

African-Americans are six times as likely as white Americans to die at the hands of a murderer, and roughly seven times as likely to murder someone. Young black men are 15 times as likely to be murdered as young white men. This disparity is historic and pervasive, and cannot be accounted for by...