 .the Negro people and the Mexican and Spanish American peoples.” Henderson observed that both minority groups were deprived of civil rights, exploited to the point of starvation, kept in decayed housing, denied educational opportunities, and in Henderson’s view, “blocked from their own cultural development.” Henderson eventually, as President of the union, established it as the agricultural arm of Congress of Industrial Organizations (CIO) in 1937 after having been abandoned by the AFL.Unable to persuade the AFL to charter an international union of agricultural workers and increasingly drawn to the Congress of Industrial Organizations (CIO) industrial union structure, Henderson and representatives from locals throughout the country met in Denver in July 1937 to form UCAPAWA, which promptly received a charter from the CIO.