Salò, or the 120 Days of Sodom (Italian: Salò o le 120 giornate di Sodoma), commonly referred to as simply Salò, is a 1975 Italian art film written and directed by Pier Paolo Pasolini, with uncredited writing contributions by Pupi Avati. It is based on the book The 120 Days of Sodom, by the Marquis de Sade. The story is in four segments, inspired by Dante's Divine Comedy: the Anteinferno, the Circle of Manias, the Circle of Shit and the Circle of Blood. The film also contains frequent references to and several discussions of Friedrich Nietzsche's 1887 book Zur Genealogie der Moral: Eine Streitschrift, Ezra Pound's poem The Cantos, and Marcel Proust's novel sequence In Search of Lost Time. It was Pasolini's last film; he was murdered shortly before Salò was released. Because of its scenes depicting intensely graphic violence, sadism and sexual depravity, the film was extremely controversial upon its release, and remains banned in several countries.