Director Robert L. Camina delves into a dark and almost forgotten corner of gay history with his documentary Upstairs Inferno. In 1973, the New Orleans gay bar Upstairs Lounge was firebombed during Pride Weekend. Thirty-two people were murdered in the attack, which the New Orleans media and city leaders ignored. Some of the victims remained unidentified because their families did not want the shame of being linked to a gay person; their burials were paid for by anonymous donors. The police never charged anyone in the attack. Camina's film uses interviews with survivors and eyewitnesses to recount the night of the attack and its aftermath. Upstairs Inferno screens at 9 p.m. tonight at the Hi-Pointe Backlot (1002 Hi-Pointe Place; www.cinemastlouis.org/qfest) as part of Qfest, Cinema St. Louis' LGBTQ film festival. Tickets are $12.