Sweden definitely suffers from a Muslim threat - in resemblance with America:
http://endoftheamericandream.com/archives/the-fastest-growing-religion-in-america-is-islam
However, in Sweden, Christians account for a higher percentage of the population than in America.
Furthermore, most of the Middle East immigrants that lately have come to Sweden are Christians and most of the ones who are predicted to come as well (as a lot of Christians presently are fleeing Iraq and Syria).
Malmo is third largest Swedish city. Things have not been going well, there.
Are they Christians or simply claiming to be that. Swedes may be culturally Christian but only in a very loosely understood way.