As for the discussion at hand, since as long as I'm here I may as well give my two cents speaking of what I know which is my country, France
Islam isn't a problem in itself, it's only one of the many consequences of the immigration policies since the end of WW2 which themselves are the result of political parties, left and right alike completely embracing the idea of a globalized market, and the economic liberal concept of free movement of people and goods
There's a multitude of factors making the integration of muslims particularly difficult, there's of course the fact most of them come from traditional patriarcal nations which are culturally opposed to the feminized western social democracies, there's the feeling of humiliation and resentment from the days of the French colonial empire, as well as the fact most of the second generation muslims saw their parents work menial jobs, not to mention said resentment has been exploited by the Left, dangerously painting France as a fundamentally racist country that should pay for its past crimes (as anti racism has now become the only way for leftist parties to attempt to differentiate themselves from the right, as they're more or less on the same liberal streak as the right when it comes to economic issues) there's the disastrous housing policies creating ghettos, there's the destruction of the educational system based on the delusions of that jargon spewing hack Bourdieu, as well as the progressive deterioration of the traditional Republican (in the French sense of the word) model of integration in favor of an Anglo Saxon communautarian system
That's why when Sakorzy talks about "national identity", he's making a fool out of himself, there's no national identity, and he's the prime example of that, he's an Atlantist social climber midget who's only there to lick dirt off American boots and expel half a dozen poor shmucks from Afghanistan to pretend he's some kind of hard edged nationalist, while allowing hundreds of thousand of clandestines to enter the country to get some low cost workforce
I don't blame muslims, they aren't guilty of anything, they're as much victims as the european masses that are simply subjected to something they never wished
It doesn't stop me from being very pessimistic for the future though