It's a holiday in California in honor of Cesar Chavez -- arguably the most important Latino leader in US history. In the 1960's, he organized poor Mexican farm workers against rich California farmers using boycotts, marches and other forms of nonviolent action. In the process, he inspired a generation of activists for other causes as well as his own. But that's not all there is to the story, as revealed in a new biography, The Crusades of Cesar Chavez, by Miriam Pawel. She also wrote The Union of their Dreams, about the United Farm Workers.