Great Art? The graffiti of the New York subway - BBC News
COPS - NYC Transit Police - YouTube
New York City Police Department corruption and misconduct - Wikipedia
Police Officer John Skagen, New York City Transit Police Department, New York
Behind the Subway Arrests Controversy Roiling New York City
De Blasio on More Officers on the Subway, NYC Outreach
nycsubway.org: The New York Transit Authority in the 1970s
New York City Transit Police - Wikipedia
1970s New York Cops, Police on Horseback, HD from 35mm - YouTube
History of the New York City Police Department - Wikipedia
History of the New York City Police Department - Wikipedia
A timeline of Hochul and Adams' fight for more cops on the subway - City & State New York
Keep the NYPD Out of the Subway - Truthout
Subway Graffiti Is on the Rise in New York City
26 Disturbing Pictures From New York Subway History
History of the New York City Police Department - Wikipedia
New York's top transit cop retires amid a rash of subway robberies, stabbings, and shootings | Fortune
NYPD, FBI Accused of Possible Coverup in 1972 Mystery Murder of Cop in Harlem Mosque – NBC New York
Mayor to send more NYPD officers to subway system
The last days of American civilization": How the NYC subway became a potent (but erroneous) metaphor | Salon.com
History of the New York City Police Department - Wikipedia
