WHAT’S EDGIER THAN MAKING HEROES OUT OF PEOPLE WHO KILLED AN OLD MAN IN A WHEELCHAIR? Metropolitan Opera romanticizes one NYer’s murder. “In 1985, New Yorker Leon Klinghoffer, 69, and his wife Marilyn took a cruise to celebrate their 36th wedding anniversary. Leon never came back: Four members of the Palestine Liberation Front hijacked the Achille Lauro, shot him in the head and threw him overboard in his wheelchair. Starting in October, The Metropolitan Opera in Lincoln Center plans to show a mockery of this brutal murder — the long-dormant ‘The Death of Klinghoffer.'”