There's no doubt about it. Every country has its share of crazy racist people. Korea, of course, is no exception. But racism in Korea is sometimes more than just simple, unfound hate. Some of the racism is founded on scars centuries year old, some of it is purely out of fear of the unknown.
Of course if your best friend is from the good ol' Dae Han Min Guk (Korea), that means you're chummy enough to talk about your sexy time escapades. But if you're so close to all your Korean friends, you might want to know why sex, drugs and politics aren't the best conversation topics.