U2 have been advocates for peace and justice for nearly a half century. Which his why it was not surprising that during Sunday night’s (Oct. 8) show at the new Sphere in Las Vegas singer Bono took time out to acknowledge the devastating aftermath of a brutal surprise assault by Hamas militants early Saturday morning o Israel that has so far resulted in the deaths of more than 700 Israelis, including 260 killed at the Supernova desert dance festival.