More cops mean less crime. This is one of the most robust findings of empirical criminology, supported by study after study since at least the late 1990s. But researchers still debate how, exactly, this effect comes about. Does increasing the number of officers reduce offenses by increasing the number of crimes solved, or by deterring offenders from committing crimes in the first place?
Beat Cops Cut Crime: A new study explores how police presence maintains public order.
