It's worth mentioning that Korean democracy is a relatively new phenomenon. For a period of time, South Korea was effectively a military dictatorship. It was only until 1988 that SKorea actually elected a president for the first time. Before that it was just one military coup after another.

https://en.wikipedia.org/wiki/Park_Chung-hee

Park Chung-hee is largely credited for creating the "Miracle on the Han River" which led to the current prosperous SKorea we know today. He was also a brutally repressive leader who tortured and killed many of his opponents.