The New York Post reports two NYPD officers were shot dead "execution style" in Brooklyn. It's unclear why the gunman walked up to the police car. As the New York Post says, NYPD officers were parked and working overtime as part of an "anti-terrorism drill." The Post also goes on to say the gunman fled to a nearby subway station. The gunman is now dead.
Why did the gunman open fire unprovoked on two New York City police officers?