Sean W. AnthonySean W. Anthony is Assistant Professor of History at University of Oregon. His books include The Caliph and the Heretic: Ibn Saba and the Origins of Shiism and Crucifixion and the Spectacle of Death: Umayyad Crucifixion in its Late Antique Conext. His research and publications focus on the emergence of Islam and the origins of its sacred and sectarian traditions. Read More Read Less