NEW YORK — The PLO and Palestinian Authority should not be blamed for terror attacks in Israel that killed or wounded Americans in the early 2000s, the groups’ lawyer told a New York City jury Thursday, but the victims’ attorney insisted the organizations sanctioned the bloodshed. The civil case in Manhattan and another in Brooklyn have emerged as the most notable attempts by American victims of the Palestinian-Israeli conflict to use U.S. courts to seek damages that could reach into the billions of …