Cesar Chavez leader of the United Farm Workers Union announces at a news conference that they have started a boycott of lettuce growers because they...
{"Image ImageDescription": "Cesar Chavez, leader of the United Farm Workers Union, announces at a news conference that they have started a boycott of lettuce growers because they will not recognize the union, Los Angeles, California, May 2, 1972. (Photo by Underwood Archives/Getty Images)"}