Lo blanco, lo rojo y lo negro 1979

Directed by Alfredo Salazar

All kinds of crimes are being committed in a frontier settlement; if you blame it on the Chiricahuas afterwards, you can get away with anything. One Chiricahua hooks up with a white guy and a black woman who have been victimized by the status quo, and the three of them whoop some righteous-vengeance butt.