César Chávez

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This photo released by Pantelion Films shows Rosario Dawson as Dolores Huerta, left, and Michael Pena as Cesar Chavez in a scene from "Cesar Chavez." (AP Photo/Pantelion Films)

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President Barack Obama speaks at the screening of the film 'Cesar Chavez', Wednesday, March 19, 2014, in the Old Executive Office Building on the White House complex in Washington. The movie biopic is directed by Diego Luna about the Mexican-American labor leader Cesar Chavez. (AP Photo/Pablo Martinez Monsivais)

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President Barack Obama speaks at the screening of the film 'Cesar Chavez', Wednesday, March 19, 2014, in the Old Executive Office Building on the White House complex in Washington. The movie biopic is directed by Diego Luna about the Mexican-American labor leader Cesar Chavez. (AP Photo/Pablo Martinez Monsivais)

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An attendee holds a picture of Cesar Estrada Chavez on Oct. 8, 2012, as President Obama announces the establishment of the Cesar E. Chavez National Monument in Keene, Calif. (Associated Press)

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Dignitaries including Delegate Eleanor Holmes Norton (fifth from right), D.C. Democrat; Christine Chavez (sixth from right,), the granddaughter of Cesar Chavez; Arun Gandhi (fifth from right), the grandson of Mahatma Gandhi; Harry Johnson (right), president and CEO of the Martin Luther King Jr. Memorial Project; and Marc Morial (second from right), president of the National Urban League, lead a candlelight vigil at the Martin Luther King Jr. Memorial. (Andrew Harnik/The Washington Times)