Prejudices against foreigners in Korea

Our country have emphasized 'One ethnic family'. There are very few foreigner in Korea. We can't see foreigner easily without center of Seoul, like Myeongdong, Itaewon, and so on. If we see foreigners on uncrowded road or in the subway, our eyes would be focused on them, just because they are foreigner and have different appearance. Most Korean are unfamiliar with foreigner, because we can't meet foreigner frequently. Nowdays, the world become global, but racism still exists in Korea. Korean people have many prejudices against foreigners.
When my friend went Itaewon alone, a black man talk to her at the bus stop. He was large, and he expressed an interest in my friend. He asked her phone number repeatedly. She told me that she felt scared even he was kind. After that day, I met my friend and told about that day together. We thought he had bad purpose.(things like picking up women) If he had been white person and had good appearance, Was that thought changed? We think so.
After Erika told us about story of her student, I feel sorry to that black man. It was the stupid stereotype. I regret that day.
We know raism is very bad thing, but it is difficult to put our thoughts into action. So, I want to meet many foreigners to broaden my horizons. Our mind could be changed by our experiences.