La India (1976)
Boy is traumatized from watching his sex-worker mother with her clients; he grows up with a particular grudge against that one guy that used to come to see her...
Directed by: Rogelio A. González
Starring: Isela Vega, Jorge Martínez de Hoyos, Mario Almada, Lilia Prado, Pascual García Peña, Jaime Moreno
Links: IMDb, Movie posters, Movie stills