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United Farm Workers (UFW) President Cesar Chavez leads lettuce boycott in Claexico, CA

United Farm Workers (UFW) President Cesar Chavez talks to a crowd of some 3100 striking Imperial Valley lettuce pickers at a mass rally on February 1, 1979 in Calexico, CA. Chavez said that the UFW is gearing up for a possible nationwide lettuce boycott. (UPI Photo/Mark Loundy/Files)

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