In these documents, the military calls the demonstrators and progressive leaning people pro-North Korean which is illegal in Korea according to some outdated law forbidding any praise of North Korea. Regarded as treason!
After quelling the demonstrations, the military's scenario was for imposition of martial law. Detailing what to do if the Joint Chief of Staff refused to go along. They would then censor all the leading media services. And so on.
The ruling party had enough votes to reject impeachment, so the military made up this scenario.
Other documents showed that the military intelligence agency spied on Korean citizens, including demonstrators, and opposition members.
These people had no sense of right and wrong., Really messed up power trip.
Hankyoreh: Military considered martial law if court rejected Park’s impeachment
Nikkei Asian Review: South Korea orders probe into military plans to quash Park protests