100% white? The two classes I teach both have around 50% immigrants, and live in the kebab-capitol of Norway. In fact, a study that was done a few years ago(that I don't have atm, but I have referenced it here before), has shown that the parts of the country with the fewest immigrants are most hostile to immigraton, while the places with the most immigrants are the most positive. This fits nicely with the pro-immigration parties(Left and Socialist Left) having most of their support in urban areas(where most immigrants are found), and the right wingers(progress party) having lots of support in rural areas(where you won't find many immigrants).

And no benefit? Bah, they work and pay taxes, that is the benefit. What the only study I have ever seen found, was that immigrants contributed more in taxes than they recieved in benefits. Less than the rest of the population, sure, but still more than we spend on them.