The Somalis currently seem to have a run. Now they are after a Swedish cartoonist:
http://www.thelocal.se/24198/20100104/
As is linked in that article, they also make massive use of Sweden as a recruitment base for terrorists - in youth centres.
http://www.thelocal.se/23212/20091111/
Disclaimer: As alaways, i can assure that religion has nothing to do with it. The women quoted in that article, saying "it is part of our religion", is blatantly lying.