To find articles about the NYPD, try using this subject/descriptor term: New York (N.Y.). Police Dept.
...then narrow your search down by adding one or more other terms using AND between each term such as: "Police-Community Relations", "Crime Prevention", "Officials and Employment", "Policewomen", "Diversity", "Racial Profiling", "Stop and Frisk", "Counterterrorism", "Trials and Litigation" ... Many other terms find articles.
We have recently digitized all issues of Law Enforcement News (1975-2005), published by John Jay College, which regularly reported on the NYPD.
From Google News, articles that mention the NYPD
White, M. D. (2014). The New York City Police Department, its Crime Control Strategies and Organizational Changes, 1970-2009. JQ: Justice Quarterly, 31(1), 110-131. doi:10.1080/07418825.2012.723032
Thale, C. (2007). The Informal World of Police Patrol: New York City in the Early Twentieth Century. Journal Of Urban History, 33(2), 183-216. doi:10.1177/0096144206290384
Thale, C. (2004). ASSIGNED TO PATROL: NEIGHBORHOODS, POLICE, AND CHANGING DEPLOYMENT PRACTICES IN NEW YORK CITY BEFORE. Journal Of Social History, 37(4), 1037-1064.
Kane, R. J., & White, M. D. (2009). Bad cops. Criminology & Public Policy, 8(4), 737-769. doi:10.1111/j.1745-9133.2009.00591.x
Try searching these databases for scholarly and popular articles on the NYPD:
Academic Search Complete (EBSCOHost) (CUNY USE ONLY)
Criminal Justice Abstracts with Fulltext (JOHN JAY USE ONLY)
|* Search multiple criminal justice databases (JOHN JAY USE ONLY)|
|Search several databases at the same time; includes: Criminal Justice Abstracts, SocINDEX, HeinOnline, and more.|