NEW YORK, NY - APRIL 23: Police and private security personel monitor security cameras at the Lower Manhattan Security Initiative on April 23, 2013 in New York City. At the counter-terrorism center, police and private security personel monitor more than 4,000 surveillance cameras and license plate readers mounted around the Financial District and surrounding parts of Lower Manhattan. Designed to identify potential threats it is modeled after London's "Ring of Steel" system.

NYC Installs Microphones On Streets For ‘Gun Crime’

“We are always concerned about secondary uses of technology that is sold to us for some unobjectionable purpose and is then used for other purposes. If [ShotSpotter] is recording voices out in public, it needs to be shut down.”