This clip shows a an early 1970s boycott against the grocery store chain Safeway by California farm workers and/or farm worker supporters, taking place near a freeway offramp in San Francisco, specifically in the SoMa area at 9th Street and Bryant Street. 

Signs read: “FARM WORKERS SAY THANK YOU” and “NO ON SAFEWAY.” One man points spiritedly at his sign, as if to emphasize the importance of the sign's message to passing drivers. 

A boy carries a United Farm Workers flag, which is red and has the insignia of a black Aztec eagle. 

A man says that one of the directors of Safeway was discovered trying to get Proposition 22 passed, which would have effectively destroyed the farm worker labor union. He says that his group handily defeated Proposition 22 by about a million votes,  and now they’re “on full blast” with a mandate from voters to boycott lettuce as well as Safeway.