-> that´s wrong: most work were done by Germans (and working immigration was not only from turkey, remember our greel and portugese friends?).
-> 100 Billion? Give me some more facts.
---
Anyway economical facts don´t say much about the behavior of those guys. We have a lot of immigrants & they are welcome as long as the respect our law, the flag and this is what most of them do. But muslims are significant other than e.g. guys who came from Italy, Poland or from Asia. They live by their own rules and build large walls to other party of the community.
I agree with polli - islam is a Trojan Horse we ignore at our peril. Instead of accusing him/her of 'extremism' I suggest you look at history. In former Yugoslavia, many ethnicities and religions were friends like you people mention in your examples. Friendships that went back decades. When conflict started, this counted for nothing. Neighbours murdered neighbour.
Ask yourselves whose side these 'friendly muslims you have a beer with' are really on when push comes to shove, would they protect YOU (a non-muslim) from the mob if breakdown or strife occurred? Check the figures out for rape in Malmo, Oslo and Stockholm by ethnicity. Check the figures out for welfare dependency.
The trouble is, and I say this with all due respect to those who disagree with me, certain information is considered 'sensitive' by liberals and many sections of the media, especially our feted BBC (blatantly biased corporation) and is not propagated even though it's readily available. It is not de rigeur to question the authenticity and veracity of the general consensus of the mainstream political parties and media as regards the 'benefits of multiculturalism' and the wonders of diversity that we in Europe have been blessed with by our loving politicians.
What Polli is saying to the USA is DON'T make the mistakes the Europeans have. Be very careful who you allow to settle in your country or reap the results. In a few months time, the UK will be opening the doors to 30 million Romanians and Bulgarians, and there's not a thing the UK government can do about it. There is a big difference between metered, controlled immigration and colonization. Unfortunately the cretins those who bother to vote have elected fail to realize this.
It's all very well being 'right on' about this matter - do you think you will have online gambling, drinking, topless sunbathing and career women when certain groups become dominant? Because they WILL become dominant.
I think that those who dismiss the issue in a blasé way by saying 'it's only a few extremists' are simply avoiding the deeper issue and the uncomfortable facts which underneath they already know, but cannot bear to admit.