For example the word "틀리다" is oftem used to mean wrong and different. That strikes me as double speak and limiting people's thoughts and actions through language.
In 1984 they address each other as brother and sister , here we have "형" "어니" etc.
Everyone has a rank and does what they are told, even if it is wrong. In Korea 2+2 does equal 5 if someone older than you says it does.
Critical thinking seems to be discouraged, especially in education where rote learning is king.
Also, being a public school teacher I hear kids singing the national anthem and taking the pledge of allegiance on what sometimes feels like a weekly basis.
Plus the collective culture, jingoism, uber nationalism "우리나라" our country not yours. Suspicion of '외국인' - literally outsiders.
I read 1984 about a hundred years ago, i'd never seen the movie. The movie made me think about Korea a lot."