I feel like it's so different for everyone, that it's hard to tell.
I've seen kpop fans being racist and not even knowing it. They can be racist against asian or other races.
Also racism has so many different forms. It's different in US, Europe, Asia etc. The way people are racist is different in every country or culture.
It really depends on a person. Some people maybe become more open-minded and accepting learning about other cultures. For some it maybe makes them feel superior (sometimes even morally superior, which usually encourages the racism, they are unaware of, since they think how they're doing good and the right thing, but are racist towards someone else).