Murray Bookchin (January 14, 1921 – July 30, 2006) was an American libertarian socialist author, orator, and philosopher. A pioneer in the ecology movement, Bookchin was the founder of the social ecology movement within anarchist, libertarian socialist and ecological thought. He was the author of two dozen books on politics, philosophy, history, and urban affairs as well as ecology. In the late 1990s he became disenchanted with the strategy of political Anarchism and founded his own libertarian socialist ideology called Communalism.
Bookchin was an anti-capitalist and vocal advocate of the decentralisation of society along ecological and democratic lines. His writings on libertarian municipalism, a theory of face-to-face, assembly democracy, had an influence on the Green movement and anti-capitalist direct action groups such as Reclaim the Streets.