Daniel O’Connell, a labor scholar, and Scott Peters, a professor of global development, talk about the historic battle, from the 1930s to the present, between rural farmers and agribusiness in California’s Central Valley. In their new book, “In The Struggle,” they examine what they see as the unjust and oppressive structures of the valley by looking at the many academic leaders and activists who have exposed misdeeds by the U.S. Department of Agriculture, the California Farm Bureau, and the University of California.