Cesar Chavez Immigration Rally - 3/26/06 Thousands of farm workers from throughout California and as far away as Oregon traveled for hours on 50 chartered buses to downtown Los Angeles for a rally at the federal building and Mass at the cathedral honoring Cesar Chavez’s birthday. After the days program, they will re-boarded the buses to make the long journey home, pledging to honor the United Farm Workers’ founder by working for immigration reform in their rural communities. Chavez’s birthday, celebrated as an official state holiday, is March 31.