- New York Police Commissioner Bill Bratton has announced he will retire from his post next month.
- Sean Kennedy: Bratton's policing techniques reduced crime in cities across America, from New York to Los Angeles and Boston.
Sean Kennedy is a writer based in Washington. Previously, he was a U.S. Senate aide, television producer and a fellow at public policy think tanks. The views expressed in this commentary are his own.
(CNN)In 1990, at the peak of the crack epidemic, New York City recorded 2,245 annual murders. Adjusted for population that year, an individual was as likely to be killed in New York as he was in Chicago, each of which averaged approximately 30.5 homicides per 100,000 residents.