David Greenberg is Professor of History and of Journalism & Media Studies at Rutgers University, New Brunswick, and a frequent commentator in the national news media on contemporary politics and public affairs. He specializes in American political and cultural history. His new book, John Lewis: A Life, a biography of the civil rights hero and U.S. congressman, will be published this year by Simon & Schuster. His other books include Republic of Spin: An Inside History of the American Presidency (W.W. Norton, 2016), Nixon’s Shadow: The History of an Image (W.W. Norton, 2003), and Calvin Coolidge (Henry Holt), a biography for the American Presidents Series. He has won fellowships from the Guggenheim Foundation and the Cullman Center of the New York Public Library, among other organizations.