Cesar Chavez Day, born 1927, Yuma, AZ.
Cesar Chavez (born César Estrada Chávez, locally ; March 31, 1927 – April 23, 1993) was an American labor leader and Latino American civil rights activist. Along with Dolores Huerta, he co-founded the National Farm Workers Association, later renamed the United Farm Workers (UFW) union. - Wikipedia