There's a wide variety of explanations for the crime drop, including from increased educational attainment, overall better economic situation, and lead poisoning caused by leaded gasoline subsiding.
Attributing it solely to crackdowns in the 90's is pretty disingenuous; crime had been falling before Giuliani, and in a broad array of cities which hasn't instituted tough on crime policies.
Attributing it solely to crackdowns in the 90's is pretty disingenuous; crime had been falling before Giuliani, and in a broad array of cities which hasn't instituted tough on crime policies.