The repressive nature of the Díaz regime attracted the attention of a number of U.S. nationals who joined in international solidarity with Mexicans to oppose Díaz, particularly outraged by U.S. businesses' direct responsibility for the most horrific Mexican labor practices.
Den undertrykkende natur i Díaz' regime tiltrak et større antal USA-borgere, der kæmpede i international solidaritet med mexicanere mod Díaz, specielt fordi USA-ejede virksomheder var direkte ansvarlige for de uhyrlige arbejdsforhold i Mexico.