Union of Cinema Production Workers (Spanish: Sindicato de Trabajadores de la Producción Cinematográfica) was an autonomous (non-"charro"-led) Mexican trade union. It was formed in 1944 after splitting off from the CTM-affiliated Union of Cinema Industry Workers (Sindicato de Trabajadores de la Industria Cinematográfica, (STIC)). Mario Moreno "Cantinflas" served as its first secretary general.
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Union of Cinema Production Workers Wikipedia(Text) CC BY-SA