Most of the media in Korea are conservative and owned by the rich.
They are dead set against liberals and progressives.
I happened to read some blatant lies in an English article in Business Korea by the publisher.
Business Korea article : South Korea under ‘Insane' President
Pro-government rallies draw larger crowds. Usually anti-government rallies are small in scale.
He says that President Moon is "insane". Most Koreans respect President Moon very much and half the country thinks he is doing a very good job. This is in spite of all the incessantly bad press and outright lies from the conservatives and the rich.
The rich and powerful are losing control and they hate it.