Join Fergus Bordewich as he discusses his new book, "Klan War: Ulysses S. Grant and the Battle to Save Reconstruction." Klan War is a bold and bracing record of America’s past that reveals the bloody, Reconstruction-era roots of present-day battles to protect the ballot box and stamp out resurgent white supremacist ideologies. Fergus Bordewich is the author of eight previous nonfiction books, including Congress at War: How Republican Reformers Fought the Civil War, Defied Lincoln, Ended Slavery.