. "he is the question at the heart of Outrage, Kirby Dick's rabble-rousing new documentary that debuts tonight at New York's Tribeca Film Festival. (It opens May 8 in L.A. and four other cities, including Washington.) Clearly pulling no punches, the film investigates the secret lives of closeted gay politicians, some of whom have spent years in office with only the skimpiest of scrutiny from the m" . . .