Mexican American Zinc miners near Silver City go on strike. Written, directed, and produced by filmmakers who were blacklisted in Hollywood, the film itself was blacklisted and lead actress Rosaura Revueltas deported to Mexico during shooting. It shows the influence of Italian Neo-Realism and is recognized as an early feminist work. Selected for preservation by the National Film Registry.
https://www.amazon.com/Salt-Earth-Rosaura-Revueltas/dp/B010PRZKTI/ (Free with Amazon Prime or a free trial of Epix under “More Purchase Options”)