Samuel WalkerSamuel Walker is Professor Emeritus of Criminal Justice at the University of Nebraska, Omaha, where he taught for 31 years before retiring in 2005. He is the author of 13 books on policing, criminal justice history and policy, and civil liberties. Hi current research involves police accountability, focusing primarily on citizen oversight of the police and police Early Intervention Systems (EIS). Originally trained as a historian, he is completing a book on U.S. presidents and civil liberties. His personal website, with information on police accountability is: http: //samuelwalker.net. Read More Read Less