Gwangju Uprising
In May 1980, peaceful demonstrations took place in Gwangju against Chun Doo-hwan, leader of the military coup d'état of 12 December 1979. The demonstrations were suppressed by military forces, including elite units of the Special Operations Command. The situation escalated after a violent crackdown, resulting in the Gwangju Uprising, where civilians raided armories and armed themselves. By the time the uprising was suppressed 9 days later, many hundreds of civilians and several police forces / soldiers were dead. After civilian rule was reinstated in 1987, a national cemetery was established to honor the victims of the incident. Now the South Korean constitution admits the Gwangju Uprising as a root of South Korean democracy.