It may not be explicitly a gay film, but there are very few movies with as openly gay a tone as the cherished 1972 classic 'Cabaret,' featuring Liza Minnelli in the defining role of her career. Fittingly for a hit musical, 'Cabaret' was on Broadway long before it was on cinema schools, appearing on Broadway in 1966. The stage show wasn't the first iteration of the tale though; that would be the book 'The Berlin Stories,' a war novel first published in 1951.
Despite the showy centerpieces and all the singing, 'Cabaret' actually captures a dark era in German history, set in Berlin as the Nazis are taking their first strides towards power. While ostensibly about gay sexual relationships, many of which are depicted on screen, the film is really about the threat that Nazis presented to the personal freedoms of German citizens, and the shocking speed with which the public came to accept those views.