there is also a fraternal society within the NYPD of Jewish officers called the Shomrim. It was founded in 1924.
The goal of the society “so that Law Enforcement Officers of the Jewish faith may join together for the Welfare of all.”
Most famously Capt. Max Finkelstein was appointed by Fiorello Laguardia in 1938 to oversee the security of visiting Nazi/German officials and to guard the German Embassy, Consulate, and to keep an eye on other suspected Nazi sympathizers. The entire NYPD security staff for the German Consulate was Jewish. This is what happens when you have a good Jewish Mayor like Fiorello Laguardia.
(source: “Police Detail Made Up Solely of Jews Will Guard the German Officials Here”. The New York Times: p. 9. 17 November 1938)
LaGuardia’s fine attention to the police detail was probably inspired by a decision by Theodore Roosevelt, when he was NY Police Commissioner to guard an unwelcome antisemitic preacher with 40 Jewish police officers.
For more on the current activities of the Shomrim Society, see