As a resident of Sweden, I feel I have to make some things clear.
Firstly, Sweden is a huge country (lots and lots of space) with a population of 9 million. There are about 380000 muslims in Sweden, and an even larger population of secular immigrants. There are 18000 jews in Sweden, most of them live in and around the Swedish capital of Stockholm, the rest in Gothenburg and Malmö.
Sweden is one of most, if not the most, secular country in the world. About 80-85% say the they have no faith whatsoever, others that they are somewhat spiritual bt do not belong to an organized faith. Immigrants from muslim countries have started to tilt these statistics, as they are muslim.
Swedish Jewry is, therefore somewhat understandibly, renowned for it's high rate of intermarriages. Not because they're reform or liberal, but simply because they are not religious at all and identify themselves rather with jewish culture and nationality then religion. There are, however, a number of masorti and orthodox synagogues with a small but devoted frum community.
Sweden is not being overrun with socialists and muslims, in my opinion. It is not primarlily the muslim religion that is an obstacle but rather the culture and the different views of government, freedom of speech and women.
There are some small but active nationalist parties in Sweden that make a big deal of fighting nonswedish culture, like jews (strange, since there have been jews in Sweedn for over 300 years) and muslims. On the other hand, there are some muslims who hate the jews too. So the jewish community is being squeezed in between two rival blocks that hate jews as much as each other.
Still, Sweden is probably (except for the lousy weather) the best and most free country in the world, and I'll stay a couple of years more before going to Israel.
