Pier Paolo Pasolini’s notorious final film, Salò, or the 120 Days of Sodom, has been called nauseating, shocking, depraved, pornographic . . . it’s also a masterpiece. The controversial poet, novelist, and filmmaker’s transposition of the Marquis de Sade’s 18th-century opus of torture and degradation to 1944 Fascist Italy remains one of the most passionately debated films of all time, a thought-provoking inquiry into the political, social, and sexual dynamics that define the world we live in.