Normally I wouldnt touch this subject with a 5 feet stick, atleast not in Sweden, but seeing as im on the org atm, I guess i can give it a shot.
The problem in Sweden concerning multi-culturalism is that "the once in charge" spend so much energy to integrate foriegn culture into our own that the "swedish culture" as a cultural being is fading in the eyes of the people.
Now one thing everyone have to have in mind is that every culture through out history is a mix of lesser cultures and is in constant change allways.

But to focus on what the little man feels about his culture being in change, what he fells aout it. I mean here in Sweden when i was younger and was in the earlier stages of school (public) we had many albanians, serbs etc in our classes. At first, nobody had any problem with it, I personally thought it would be fun to get to know someone who wasnt swedish by birth.

BUT, since politicians on all levels tend to be retards they had to think about what they could do "fix the racial issue" bla bla bla. The amount of flags being waved around diminished, then we were not allowed to sing our national anthem in school, not even during graduation.
Im not even a nationalist, atleast I dont call myself that, but I still felt hurt by the changes and so on.

I think, that if politicans dont interfer, dont make cultural borders and national identity a big issue, the people wont make it a big issue either. If the people are left alone to deal with cultural issues the world will take a more "regional" shape instead of "national". in other words, regional identity (seeing myself as a part of Halland or Halmstad first, Sweden second) will be more important then national.