Complex sentence: Racism in South Korea exists among some consertative Koreans and foreigners, particularly the old generation who have had little experience with multiculturalism, stemming from the historical cultural belief that Koreans are a "Hanminjok", or a homogeneous ethnic group.
Split into simpler sentences: Racism in South Korea exists among some consertative Koreans and foreigners, particularly the old generation who have had little experience with multiculturalism. For some conservative Koreans, it stems from the historical cultural belief that Koreans are a "Hanminjok", or a homogeneous ethnic group.