NYPD Blue S5 E14 Weaver of Hate 

The New York City Police Department (NYPD or NYCPD), officially the City of New York Police Department, is the largest municipal police force in the United States.[5] Established in 1845, the agency has primary responsibilities in law enforcement and investigation within the five boroughs of New York City. The NYPD is one of the oldest police departments established in the U.S., tracing its roots back to the seventeenth century.
The NYPD has a broad array of specialized services, including the Emergency Service Unit, K9, harbor patrol, air support, bomb disposal, counter-terrorism, criminal intelligence, anti-gang, anti-organized crime, narcotics, public transportation and public housing; the New York City Transit Police and New York City Housing Authority Police Department were fully integrated into the NYPD in 1995. According to the department, its mission is to "enforce the laws, preserve the peace, reduce fear, and provide for a safe environment." The department's regulations are compiled in title 38 of the New York City Rules.