On October 7, 2023, Shapira went to the
Nova music festival in Reim with his friend
Hersh Goldberg-Polin. When
Hamas militants attacked the event, Shapira's commander called and told him to report to the
Sufa military base; however, due to shooting, he and his friends ran into a public
missile shelter in
Re'im at approximately 7:55 am, hiding with about two dozen other people. According to the testimonies of the survivors, Shapira was the last to enter the shelter. Shapira reportedly attempted to inspire hope for those in the shelter by telling them that the
Israeli military would arrive soon. Shapira stood near the exit, telling those next to him that if the shelter was attacked by militants or grenades, he would throw the grenades back. On November 14, a video of this act appeared online; it had been captured by a windshield camera on a vehicle near the shelter. Shapira's friend Goldberg-Polin, who also reportedly was throwing back grenades, lost his hand from a grenade explosion, but was able to tie a tourniquet around his arm and was subsequently
taken hostage. At least seven people who were hiding in the shelter with Shapira ultimately survived the attack. Shapira's parents, Shira and Moshe, were unaware of what happened to their son until survivors of the event began calling them to tell them about their son's actions. One of the survivors hiding alongside Shapiro later noted, "Aner Shapira... saved our lives, and he deserves a medal of honor for being the angel who kept us safe". == Commemoration ==