The Haaretz:
NEW YORK — The New York Police Department has secretly labeled entire mosques as terrorist organizations, a designation that allows police to use informants to record sermons and spy on imams, often without specific evidence of criminal wrongdoing.
Designating an entire mosque as a terrorism enterprise means that anyone who attends prayer services there is a potential subject of an investigation and fair game for surveillance.
Since the 9/11 attacks, the NYPD has opened at least a dozen “terrorism enterprise investigations” into mosques, according to interviews and confidential police documents. The TEI, as it is known, is a police tool intended to help investigate terrorist cells and the like.