This week on the Thomas Jefferson Clay Jenkinson welcomes Yale Professor of History Joanne Freeman for a one on one conversation about her new book, “The Field of Blood: Violence in Congress and the Road to Civil War.” In the book, Freeman writes about the physical violence on the floor of the US Congress in the decades before the Civil War. Legislative sessions were often punctuated by mortal threats, canings, flipped desks, and all-out slugfests.