Rivalries with other teams have escalated into serious violence. A group of ultras who label themselves the Fedayn — 'the devotees' — after a group of long-forgotten Iranian guerrilla fighters are regarded to be responsible for the organised hooliganism. In 2014 Daniele De Santis, a Roma ultra, was convicted of shooting Ciro Esposito and two others during clashes with Napoli fans who were in Rome for their club's Coppa Italia final against Fiorentina. Esposito died of his wounds. De Santis was sentenced to 26 years in prison, later reduced to 16 years on appeal. Roma ultras have displayed banners celebrating De Santis.