Samuel K. Roberts, PhD, (twitter: @SamuelKRoberts) is Associate Professor of History and Sociomedical Sciences at Columbia University and the Mailman School of Public Health in New York City. He is the author of Infectious Fear: Politics, Disease, and the Health Effects of Segregation (University of North Carolina Press, 2009). He is the policy coordinator of Columbia University’s Criminal Justice Initiative and a member of the Mailman School of Public Health’s Working Group on Mass Incarceration and Public Health. Roberts is also the Coordinator of the upcoming conference titled “Challenging Punishment: Race, the People’s Health, and the War on Drugs” (October 4-5, 2013, New York City), at Columbia University’s Institute for Research in African American Studies (IRAAS).