Ingagi

Ingagi is a 1930 PreCode exploitation film. It purports to be a documentary about Sir Hubert Winstead of London on an expedition to Africa, and depicts a tribe of gorillaworshiping women encountered by the explorer. The film claims to show a ritual in which African women are given over to gorillas as sex slaves, but in actuality was mostly filmed in Los Angeles, using white actresses in blackface in place of natives. It was produced and distributed by Nat Spitzers Congo Pictures, which had been formed expressly to make the film. Although marketed under the pretense of being an ethnographic film, the premise was a fabrication, leading the Motion Picture Producers and Distributors Association to retract any involvement with the film.

Source: Wikipedia