CORRECTIONS:

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There were presidents named Syngman Rhee(이승만),  Bak Jeonghui(박정희) and Chun Doo-hwan(전두환).

They were presidents and dictators.

They killed people and made fake news.

For example in Gwangju, Chun Doo Hwan, the president(dictator), killed many people and made fake news.

He blocked the entrance so the people could not go inside or out of Gwangju.