He calls himself "Jimmy Justice," a self-styled "cop-arazzi," armed only with a video camera as he prowls the streets of New York looking for law enforcement officers who are breaking the law. His targets are illegally parked city government vehicles -- particularly cars of traffic cops blocking bus stops, sitting in "no parking" zones or double-parked. Cop cars blocking fire hydrants make him particularly incensed. "Something like that is just despicable," Jimmy fumed, pointing to a police enforcement vehicle parked next to a fire hydrant on 33rd Street on Manhattan's West Side on a muggy July afternoon. "They're never allowed...