Karaiskakis Stadium disaster

The Karaiskakis Stadium disaster, also called the Gate 7 Tragedy, was an incident that occurred on 8 February 1981 at the Karaiskakis Stadium in Neo Faliro, Piraeus, Greece, after the conclusion of a football match between Olympiacos and AEK Athens. It is the worst football tragedy in Greece's history.

Source: Wikipedia — Karaiskakis Stadium disaster (CC BY-SA 4.0)