Big Apple
"The Big Apple" was popularized as a name for New York City by John J. Fitz Gerald in a number of horse-racing articles for the "New York Morning Telegraph" in the 1920s. The earliest of these was a casual reference on 3rd May, 1921:
New York City
The New York City Police Department (NYPD) has been the largest police force in the United States by a significant margin, with over 35,000 sworn officers. Members of the NYPD are frequently referred to by politicians, the media, and their own police cars by the nickname, "New York's Finest".