1972 Munich Olympics

The 1972 Munich Olympics became the darkest Olympic chapter when Black September terrorists murdered 11 Israeli athletes over September 5-6. A failed rescue left all hostages dead, plus five terrorists and one police officer, killing 2% of Israel's team. The 34-hour suspension was the longest in modern history, leading to a 400% spike in global event security. Compared to 2014 Sochi Winter Olympics's Sochi doping, Munich's violence was immediate: the crisis lasted 20 hours, while Sochi's corruption took years. Germany's post-attack security reform cost $240 million annually, 20 times the event's $12 million budget. A data point: 900 athletes were evacuated post-attack.