David A. Harris has been writing, teaching and conducting research about the law and police for thirty years, specializing in race and criminal justice. He is the Sally Ann Semenko Chair at the University of Pittsburgh School of Law, where he teaches Criminal Law, Criminal Procedure, and Evidence. Professor Harris conducts seminars and training for lawyers, judges, police officers and community activists across the U.S.; he also speaks regularly to lay audiences about the law. He works frequently with the national media as a legal analyst on criminal justice and police issues, and hosts the Criminal Injustice podcast. A City Divided is his fourth book; his others are Failed Evidence: Why Law Enforcement Resists Science (2012), Good Cops: The Case for Preventive Policing (2005), and Profiles in Injustice: Why Racial Profiling Cannot Work (2002). He is a 2015 winner of the Jefferson Award for Public Service. He lives in Pittsburgh.