David Madden is an associate professor of sociology and the director of the Cities Programme at the London School of Economics. Madden holds a PhD from Columbia University. He researches housing, urban theory, and urban politics, with a particular focus on New York City and London. He is the author, with Peter Marcuse, of In Defense of Housing: The Politics of Crisis, which has been translated into six languages. His writing has also appeared in The Washington Post, The Guardian, and Jacobin. He can be found on Twitter as @davidjmadden.