A person who opposes institutional systems or believes that institutions are harmful to individual freedom and society.
From anti- (against) + institutionalist (one who supports institutions). This political/philosophical term gained prominence during the 1960s-70s counterculture movements.
Famous antiinstitutionalists like Ivan Illich argued that schools, hospitals, and governments actually harm people more than help them—controversial ideas that influenced education reforms even though most people disagreed.
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