Urban crime rates in the United States fell markedly during the 1990s and remain at historically low levels. The statistical evidence presented here indicates that that decline, like the crime surge that preceded it, has been largely uncorrelated with changes in socioeconomic conditions across...

Race has long been recognized as playing a critical role in policing. In spite of this awareness, there has been virtually no previous research attempting to quantitatively analyze the issue. In this paper, we examine the relationship between the racial composition of a city's police force and...

Previous empirical studies have typically uncovered little evidence that police reduce crime. One problem with those studies is a failure to adequately deal with the simultaneity between police and crime: while police may or may not reduce crime, there is little doubt that expenditures on police...