Disgusting.
From your link....
Controversy surrounded the American premiere and other productions in the years which followed. Adams, Goodman and Sellars (the evil ones who wrote this trash)** repeatedly claimed that they were trying to give equal voice to both Israelis and Palestinians with respect to the political background.[21][22] Some critics and audience members condemned the production as antisemitic and appearing to be ‘sympathetic’ to the hijackers.[23]
Lisa Klinghoffer and Ilsa Klinghoffer, the daughters of Leon and Marilyn Klinghoffer, anonymously attended the 1991 world premiere of the opera in New York City. Afterwards the Klinghoffer family released the following statement about the opera: “We are outraged at the exploitation of our parents and the coldblooded murder of our father as the centerpiece of a production that appears to us to be anti-Semitic.”[24]
** my words, not Wiki