As thousands of people danced at a music festival in an Israeli desert area in the early hours of Saturday, Hamas militants from Gaza descended upon the revelry. Videos show young Israelis dancing to trance music under a giant Buddha statue and prayer flags around dawn — right around when festivalgoer Eliav Klein said he saw rockets launched from Gaza, startling everyone. A total of 260 people were killed at the event, according to a spokesperson for ZAKA, an Israeli nongovernmental rescue and recovery organization.