Peniel Joseph, professor of history and public affairs and director of the Center for the Study of Race and Democracy at the University of Texas at Austin and the author of Freedom Season: How 1963 Transformed America’s Civil Rights Revolution (Basic Books, 2025), talks about his new book, an examination of the impact of events in 1963 on the struggle for civil rights -- from MLK's “Letter from Birmingham Jail” to the assassination of JFK.