His research interests include normativity, the basis and extent of obligations, war and terrorism, and race. Between philosophy schoolings, he worked at Fairness and Accuracy in Reporting (FAIR) and wrote arts criticism. His publications include "Blackness and Blood: Interpreting African American Identity" (with Tommie Shelby, Philosophy & Public Affairs, 2004), "Is Terrorism Distinctively Wrong?" (Ethics, 2007), and "Normativity and the Rejection of Rationalism" (The Journal of Philosophy, 2007).