Michel Foucault (1926–84) was a French historian, philosopher and theorist who critically analyzed social institutions - medicine, psychiatry and the designation of 'madness', sexuality and prisons - and attempted to show a hidden discourse of power behind them. As an activist, Foucault was radicalised after the 1968 Paris student riots and founded an organisation called the Prisoners Information Group - Groupe d'Information sur les Prisons (or GIP) - which saw prisoners as an oppressed component of the proletariat to be liberated.
- Madness and Civilization (1961)
- The Birth of the Clinic (1963)
- The Order of Things (1966)
- The Archaeology of Knowledge (1969)
- Discipline and Punish (1975)
- The History of Sexuality (vol. i, 1976)