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South Koreans are holding some of the biggest demonstrations in their country’s history. They’ve pushed president Park Geun-hye to the brink of resignation after reports of widespread corruption. 

The largest gathering drew an estimated 1.5 million people over the weekend—three percent of the population—with no reports of violence.

Protests in Korea haven’t always been like this. The Gwangju Uprising in 1980 lead to the massacre of hundreds of pro-democracy protestors. Last year, protests over the Sewol Ferry disaster turned violent. Check out the video above to see what makes these demonstrations so different.