The inverted red triangle is a symbol showing support for Hamas and Palestinian terrorism. It was first used by Hamas during the October 7, 2023, Hamas terror attacks to signify an Israeli target.

The Supernova Music Festival massacre took place on October 7, 2023 near the Israel-Gaza border. Hamas terrorists invaded the area in vans and paragliders in the early morning hours, slaughtering over 360 unarmed young men and women and publicly desecrating their bodies. Numerous Israeli soldiers who arrived to defend the festival participants were gunned down as well.

Women and young girls were raped and murdered or mutilated in other ways. Forensic analysis of corpses showed evidence of torture as well. Hamas terrorists said they were given explicit orders to carry out these and other atrocities at the festival, including raping dead bodies.