Maybe if I didn’t live so close to New York, or if I weren’t Jewish, or if I didn’t have a son who served in the Israeli Army, or if I myself didn’t travel to Israel regularly, I wouldn’t have even noticed the recent hue-and-cry over the Metropolitan Opera’s production of “The Death of Klinghoffer.” The opera tells the story of Leon Klinghoffer, a Jewish, wheelchair-bound, 69-year-old New Yorker who was murdered by Palestinian terrorists during the hijacking of the passenger ship Achille Lauro in 1985.