Swede here. That's not even close to accurate. Örebropartiet is not extremist, but I would absolutely label them radical populist left-economic-leaning nationalists. Please do some research and make up your own mind. They're a tiny local party active in Örebro municipality where their founder and leader loudly points out clearly wasteful use of government funds, or more or less corrupt decisions made by leading party…
This sounds like you expect very few people to do this. I can't speak for others but this was exactly the first thing I did upon hearing about it, and
> Where the Örebropartiet (Örebro Party) usually are called extremist is in questions regarding immigration.
is exactly the conclusion I came to, based on their statements about "parasites". Not the integration aspect indeed...