Critias and the Thirty Tyrants Terrorize Athens, Until Thrasybulus Ends Their Rule in a Year
What happened
After Athens's surrender in 404 BCE, Sparta had the Athenians appoint thirty of their own citizens to govern the city and draft new laws. This board, remembered as the Thirty Tyrants, was led by Critias, an oligarch who had once been part of the circle of associates around Socrates. The Thirty began executing political opponents and wealthy metics, resident foreigners with no citizen protections, confiscating their property as they went. They limited full protection to a list of 3,000 approved citizens, forcing everyone else out of the city proper, and when the more moderate oligarch Theramenes objected to the scale of the killing, Critias had him struck from the list and executed. Ancient sources describe roughly 1,500 Athenians killed under the Thirty in well under a year. Exiled democrats under Thrasybulus began fighting back from a fort with a small band of men, grew their numbers, and defeated a force loyal to the Thirty near Piraeus in a battle where Critias himself was killed. Democracy was restored, and the Athenians swore a formal amnesty not to prosecute each other over what had happened.
Why it matters
Critias's history as one of Socrates's associates became a central, if legally unstated, thread in Socrates's trial for corrupting the youth five years later in 399 BCE. Athenian law barred prosecutors from charging Socrates directly over the amnesty, but ancient sources indicate his accusers built their case partly on the implication that his teaching had shaped Critias into a tyrant. The amnesty itself is notable as one of the earliest recorded examples of a society choosing a deliberate, negotiated reconciliation over mass reprisal after civil war, rather than a prolonged cycle of revenge trials.
How we know
Xenophon, who lived through this period in Athens, describes the Thirty's rule and Thrasybulus's uprising in his Hellenica. The Athenian orator Lysias, himself a metic targeted by the Thirty whose brother was executed and property seized, left a courtroom speech attacking one of the Thirty by name, giving a firsthand victim's account. The connection between Critias and Socrates's later trial is discussed by both Xenophon and Plato, though neither presents it as a formal legal charge, since the amnesty barred that.
Sources
- World History Encyclopedia. The Thirty Tyrants · Reputable sourceworldhistory.org · The domain "worldhistory.org" is on our Reputable source registry. · Link is live and its text matches the event's key terms (Jul 2026)
- World History Encyclopedia. Critias · Reputable sourceworldhistory.org · The domain "worldhistory.org" is on our Reputable source registry. · Link is live and its text matches the event's key terms (Jul 2026)
See something wrong? . Corrections with a source get fixed fastest.
Part of a timelineAncient Greece26 events · From Bronze Age palaces on Crete to a Roman general's sack of Corinth, the invention of democracy, philosophy, and Western theatre, every event sourced.View all →