David Graeber is an American anthropologist and anarchist has been involved in social and political activism, including the protests against the World Economic Forum in New York City in 2002 and Occupy Wall Street. He accepted a professorship at the London School of Economics in 2013. In November 2011, Rolling Stone magazine credited Graeber with giving the Occupy Wall Street movement its theme: "We are the 99 percent". Comparing it to the Arab Spring, Graeber has claimed that Occupy Wall Street and other contemporary grassroots protests represent "the opening salvo in a wave of negotiations over the dissolution of the American Empire." David is the author of Fragments of an Anarchist Anthropology and Towards an Anthropological Theory of Value: The False Coin of Our Own Dreams. He has done extensive anthropological work in Madagascar, writing his doctoral thesis on the continuing social division between the descendants of nobles and the descendants of former slaves. (Lost People: Magic and the Legacy of Slavery in Madagascar) Other books include: Possibilities: Essays on Hierarchy, Rebellion, and Desire, Direct Action: An Ethnography and Constituent Imagination: Militant Investigations//Collective Theorization. His major historical monograph is Debt: The First 5000 Years. He is also working on an historical work on the origins of social inequality with the archeologist David Wengrow.