FILE - United Farm Workers president César Chavez leads a strike to kick off the "Hispanics Say No!" campaign directed at voters in opposition of ballot measures in November, at Bruno's Restaurant in the Mission District of San Francisco on Sept. 26, 1984. (Eric Luse/San Francisco Chronicle via AP, File)

United Farm Workers Vice President Dolores Huerta speaks during an interview at her apartment in the Mission District of San Francisco on Oct. 1, 1969. (Bill Young/San Francisco Chronicle via AP)

Civil rights leader Cesar Chavez leads a picket against Dole in front of the offices of Castle & Cooke, its parent company, at 50 California St. in San Francisco on Feb. 3, 1982. The United Farm Workers are sponsoring a consumer boycott on Dole products where 300 union members from Ventura, Calif., have been on strike since November. (Steve Ringman/San Francisco Chronicle via AP)