#OtD 5 May 1906 during Cinco de Mayo, miners at Cananea Copper in Sonora, Mexico, protested against pay discrimination between them and American workers who earned over 40% more.

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#OtD 5 May 1906 during Cinco de Mayo, miners at Cananea Copper in Sonora, Mexico, protested against pay discrimination between them and American workers who earned over 40% more. Authorities declared martial law, the following month they went on strike https://stories.workingclasshistory.com/article/10552/cananea-miners-protest