David Graeber was an American anthropologist, activist, and author known for his influential work in the fields of anthropology and social theory. He gained prominence for his critiques of capitalism and his exploration of alternative economic systems. His book, Debt: The First 5,000 Years, examines the history and social implications of debt, challenging conventional views on money and economics. Graeber was also a key figure in the Occupy Wall Street movement, advocating for social justice and economic equality. His ideas have inspired many to rethink societal structures and the nature of work, emphasizing the importance of human relationships over monetary value.