Andrew G. Ferguson, Professor of Law at the University of the District of Columbia's David A. Clarke School of Law, discusses his book The Rise of Big Data Policing: Surveillance, Race, and the Future of Law Enforcement. He examines big data and algorithm-driven policing and its impact on law enforcement. He also looks at how new technologies will alter the who, where, when and how we police, and why data-driven methods could actually improve police accountability.