This already has happened in a small way in Belgium last month. With riots. The Islamics control certain neighborhoods and harass/tail the police when they are called into them.
Antwerp riots highlight integration difficulties
Reuters AlertNet, UK - 29 Dec 2002
... police for alleged racist behaviour. He has been accused of inciting
riots in Antwerp in November. Dyab Abou Jahjah gained hero ...
An Arab Activist Forces Belgians to Look in the Mirror
Washington Post, DC - 25 Dec 2002
... He once avoided discussing immigration, but following the Antwerp riots, he declared
on Belgian television that the Arab European League is a "threat to our ...
This thing with Islam ,is beyond Bio-hazard level 5 now.