This second volume of Christian Fuchs’ Media, Communication and Society book series outlines key concepts and contemporary debates in critical theory. The book explores the foundations of a Marxist-Humanist critical theory of society, clarifying and updating key concepts in critical theory – such as the dialectic, critique, alienation, class, capitalism, ideology, and racial capitalism. In doing so, the book engages with and further develops elements from the works of Karl Marx, Friedrich Engels, Rosa Luxemburg, Max Horkheimer, Theodor W. Adorno, Herbert Marcuse, David Harvey, Michael Hardt, Antonio Negri, C.L.R. James, Adolph L. Reed Jr., and Cornel West. Written for a broad audience of students and scholars, this book is an essential guide for readers who are interested in how to think critically from perspectives such as media and communication studies, sociology, philosophy, political economy, and political science.