Alienating integrated Muslims is probably the worst way to go. In Canada, for example, I believe two terror attacks have been thwarted by imams reporting radical Islamists to authorities.
That said, there may be some merit to the argument that the trouble only really starts after Muslims comprise a certain percentage of the popualtion, which may speak to policies that limit immigration from countires that pratice the more problematic forms of Islam.
Is it the percentage or could it be laid at the feet of the in this case Canadian Govt who accepts a large number of Imams from Saudi. They are Wahhabi and one of the most strict interpretations of Islam.
The Saudi govt provides funds for Canadian Mosques and it is easily linked to the Mosque having the appropriate Imam.
I saw it in Bosnia & Herzegovina, I am sure the same occurs in other western countries.
Would it stand a Charter challenge?
My opinion this interpretation of Islam does not equate to Canadian values.
Values that are promoted clearly by the Canadian Government.