British PM bags multiculturalism

After reading this article where British PM David Cameron intends to criticise state multiculturalism, my immediate reaction was, gee this bloke must be in trouble if he's slagging off at the Muslims so early into his term? This is normally a tactic used by long term stale leaders who are on their last legs and are looking for a cheap popularity boost, but it's surprising for a first term "moderate" Conservative Government.
In the proposed speech Cameron brings up all the usual gripes about multiculturalism;
different cultures are encouraged to live apart
need of a stronger sense of citizenship and national belonging
Muslims don't believe in our "values" (my interpretation of his argument)
I can't help but roll my eyes at these same old arguments reappearing over and over again. Ok, let's start with the "stronger sense of citizenship" argument, as has been used here in Australia so politically brilliantly by then PM Howard, what this means is wrapping yourself in the Union Jack and identifying with the majority Anglo culture. And if you're not of Anglo stock....well you're not really one of "us" are you? Best that you be kept at arm's length. So is it any wonder that when the majority culture thinks that way of its minorities, some of these people will begin to feel marginalised and rebel? I mean think about it, how many properly qualified people even in enlightened liberal democracies like Australia or Britain have missed out at job interviews because their name is Mohamed or Habib? So we treat them like second class citizens, ensure their long term unemployment, then criticise them for bludging off the welfare state and refusing to assimilate.
And the other main argument being that Muslims don't share our "values" of  "freedom of speech, freedom of worship, democracy, the rule of law, equal rights, regardless of race, sex or sexuality, and that "to belong here is to believe these things". Am I the only one who sees the irony in celebrating freedom of thought on the one hand, yet if you have different thoughts on any of those subjects you don't "belong" here? So we're free to believe some things and express them, yet some free thoughts are non negotiable?
But as usual it's the Muslims who get a bad wrap, don't most religious Jews lead separate lives however and owe their allegiance to Israel (and to God)? Where is their loyalty? And what about the Hindus with their forced marriages and honour killings?
My point being that if the authorities take this line of singling out minorities, where does it end? If you turn the electorate against these people and create a culture of hate, then you end up with a self fulfilling prophesy.
We have adequate laws in place to deal with people who step over that line and resort to some barbaric cultural village practice (which usually has nothing to do with religion) against their wife or daughter.
The positives of multiculturalism really do bloom however with the second generation who are born in their parent's adopted homeland, people who as they grow to adulthood usually have loyalty to their country of birth, yet don't see the world through the blinkered eyes of their Anglo neighbours. We the offspring of migrants are an untapped resource, multilingual in an embarrassingly monolingual world (Australia, UK, USA), a living link with other societies that can easily be exploited for trade/business/cultural links, yet our governments prefer to downplay that as much as possible.