When Cástulo de la Rocha arrived at the East LA Barrio Free Clinic in 1977, he had just moved back from Berkeley, where he’d gone to law school. “I pulled up in my old beat-up Volkswagen. I had long hair for sure, holes in my pants and things like that. So a very typical hippie,” he recalls. At the clinic, started by activists to provide free health care in Spanish to the Latino community, “I saw long lines of people waiting to get a number—a ticket early in the morning, so that they may see a volunteer physician at 4:30, 5:00 in the afternoon,” he says. “It could have been my mother, could have been my sisters. It could have been one of my…

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