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Cesar Chavez was a civil rights and labor leader, an advocate for farmworkers as well as a farmworker himself, and a champion of preserving our natural environment, especially from chemicals and pesticides. ... Cesar Chavez was one of many Mexican Americans living as migrant farm workers. They were known as Chicanos
I think 'Learning as much as he can about the issue.' would be the answer. That's usually the first step when you want to help resolve an issue.