Mateen struck during the club’s popular Latin Saturday, where three disc jockeys spun reggaeton, salsa and merengue. The first seven victims identified by Orlando officials were Hispanic men. The killer, Florida security guard Omar Mateen, was an alleged homophobe who targeted a beloved refuge for young gays and lesbians. The assault on Pulse Orlando early Sunday was the deadliest shooting in U.S. WASHINGTON-Forty-nine people were killed and 53 injured at an Orlando gay nightclub in a terrorist massacre carried out by an American who pledged allegiance to the Daesh extremist group.