I've heard rumors about Dominican dictator Gen. Rafael Trujillo had used threats and intimidation on members of his cabinet by forcing them to bring their wives and young daughters to his ranch, where Trujillo would have sex with them.
The movie, La Fiesta del Chivo "The Feast of the Goat" details this
This reminds me of a Latin American movie I saw some years ago. It was not the one you mention here though. I'll try to remember the title.
Correction: I just saw some still pictures from the film and I'm almost certain now that that was the one I watched as well lol.
Interesting to know that it was written by Peruvian Mario Vargas Llosa, the famous Nobel Prize in Literature winner.
He has written some damn fine books, including Captain Pantoja and the Special Services (Pantaleon y las visitadoras), which has been filmed twice.