Koreans tend to equate nationality or citizenship with membership in a single, homogeneous ethnic group or "race" (minjok, in Korean).[36] A common language and culture also are viewed as important elements in Korean identity. The idea of multiracial or multiethnic nations, like Canada or the United States, strikes some Koreans as odd or even contradictory. Both North Korea and South Korea are among the world's most ethnically homogeneous nations. South Korean schools have been criticised for hiring only white teachers who apply to teach English, because Koreans regard fair skin color as representative of "American" or "English"-ness.[37] Other than that, there is widespread prevailing discrimination in Korea. People generally believe in a state of "pure blood" [38]. However, despite this, South Korea is fast becoming a multicultural and multiracial country with the foreign population approaching 2% of the national population. [39] The South Korean government is also implementing initiatives to raise awareness and reduce discrimination.

Source: http://en.wikipedia.org/wiki/Racism_in_Asia