In the case of Germany, the problem is self-inflicted with the importation of guest workers, primarily from Turkey, who have never gone home.
This was recent news out of Germany
Iranian-Born German Soccer Player Refuses to Play Israel
“The team has accepted his request, angering Germany’s Jewish lobby.” Why did they accept his request? Why didn’t they tell him that accepting a spot on the German national team involved doing what the team does? Of course, he himself is threatened: this is Iranian thuggery reaching into Europe. From Spiegel Online (thanks to Fjordman):
An Iranian-German soccer player who plays for the German national Under-21 side has asked not to play against Israel in a friendly on October 12. The team has accepted his request, angering Germany’s Jewish lobby.
An Iranian-born player for Germany’s under-21 national soccer team has caused controversy by asking to be excused from playing a match against Israel in Tel Aviv this Friday.
Ashkan Dejagah, 21, said in a statement posted on the German Football Federation’s Web site that his reasons for not playing were “of a very personal nature and have to do with my close family.”
But the player had previously been quoted in Bild newspaper as saying: “There are political reasons. Everyone knows I’m a German Iranian.” Dejagah has dual citizenship. Berlin newspaper B.Z. quoted him as saying: “I have more Iranian than German blood in my veins. Besides, I’m doing this out of respect. After all, my parents are Iranian.”
“I have nothing against Israel. But I’m worried about having problems later when traveling to Iran,” he told the Berlin tabloid B.Z.