From his office in Washington D.C. Diop Kamau has a crystal-clear view of Hollywood -- if not the city itself at least police department. That's because he's the executive director of the Police Complaint Center, and he's been hearing the worst about Hollywood cops for the last decade.Yesterday Kamau (pronounced kuh-MOWH) caught wind of the department's most recent humiliation: a spontaneously hatched conspiracy to cover up a fellow cop's driving negligence in rear-ending a driver who was stoppe