His articles and reviews have appeared in Theory, Culture and Society; Constellations; Radical Philosophy; The Journal of Modern History; and the American Historical Review. He is the author of Max Horkheimer and the Foundations of the Frankfurt School (Cambridge UP, 2011) and the co-editor of Herbert Marcuse: A Critical Reader (Routledge, 2005) and Transformations of Populism in Europe and the Americas: History and Recent Tendencies (Bloomsbury, 2015).