Student: I should stop my mother from buying imported food.
Teacher: Hmm... That is a good idea.
Teacher: Why don't we all follow our mothers to the market and monitor them?
Everybody: O.K.!!! [The last Korean word might better be translated as "Yes, Sir!!"]
The entire Left and much of the Right (except its leadership) share this attitude. It may be the most-vigorous strand of Korean political thought that I noticed. It may "come from" the left-wing, but as its real appeal is on nationalistic-racialistic grounds, the right-wing "doth not protest too much". There thus being little opposition, conformism takes care of any stragglers who didn't get the memo (the apolitical, not-particularly-racialistic bloc).
In reaction to that "crisis", they passed a law requiring that all restaurants and markets post their meat-products' countries of origin. In my time in Korea, from 2009 to 2014 (not all consecutive), never once did I ever see any restaurant selling a beef-product from the USA, from the cheap "분식" [minute-food] places to the "meat buffets" to even American chain restaurants like "T.G.I. Friday's". Some had American pork, but none ever had American beef.
I saw this at a Lotteria fast-food restaurant:
The full phrase in Korean is "호주청정우". I recognize the first word as "Australia", and the last word as [an abbreviated way to say] "Beef". My dictionary translates the middle word, "청정", as "pure, immaculate, clean, spotless, stainless, unsullied, undefiled, unpolluted." By implication, U.S. beef is the opposite of those things.
Korean-grown beef is way too expensive to be economical. Lotteria now sells a "Hanwoo burger" -- Hanwoo means "Korean-grown beef". It's far-and-away their most-expensive menu item.
White Man: [Scheming] "Let's make it expensive".
Korean: [In Panic and Despair] "How can we survive if it costs so much?"
White Man: [Haughtily] "If you think it's expensive, then don't buy it!" [Whistles]
(But thanks, anyway, for the trillions in net aid [in today's dollars] you've given us, for your ongoing military protection, for liberating us from Japan, and for saving us from Communism....)