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Based on an actual strike against the Empire Zinc Mine in New Mexico, the film deals with the prejudice against the Mexican-American workers, who struck to attain wage parity with Anglo workers in other mines and to be treated with dignity by the bosses. The film is an early treatment of feminism, because the wives of the miners play a pivotal role in the strike, against their husbands wishes. In the end, the greatest victory for the workers and their families is the realization that prejudice and poor treatment are conditions that are not always imposed by outside forces. This film was written, directed and produced by members of the original "Hollywood Ten," who were blacklisted for refusing to answer Congressional inquiries on First Amendment grounds.

How to Watch Salt of the Earth Legally and Safely

If you want to stream Salt of the Earth through reputable and legal services, there are a few good options depending on where you are. Subscription platforms like HBO Max, Disney+, Netflix, Amazon Prime Video, and Apple TV+ sometimes carry Salt of the Earth films or related DC titles—though availability depends on your country.

If you’d rather not commit to a subscription, there are ad‑supported, free (but legal) platforms such as Tubi, Pluto TV, Peacock or Crackle (where available in your region) that occasionally host superhero films.

Lastly, don’t forget about library‑linked streaming options like Kanopy or Hoopla (if your library or university is registered), and official uploads by film distributors on YouTube—these can also give you legal access to classic movies.