# On Tyranny *On Tyranny: Twenty Lessons from the Twentieth Century* (2017) — [[Timothy Snyder]]'s pocket distillation of historical lessons from fascism and communism into twenty actionable warnings for defending democratic institutions ("do not obey in advance," "defend institutions," "believe in truth"). > [!info] Stub — created 2026-07-28 to resolve a broken hub link (Authoritarianism Hub, caught by the Palantir sweep lint pass). Expand.