Last March, the Tory Home Secretary Theresa May already stated that "Islamist extremism must be confronted." Britain will, in her words, no longer tolerate extremists who "reject our values." The underlying assumption seems to be that there is a specific set of British values which are superior and any Muslim who disagrees in the slightest is automatically an extremist. An extremist must, then, of course be bent on destruction of British society. This, in and of itself, is Fascist Jingoism. It contains the kind of authoritarian nationalism found in the discourse of the likes of Geert Wilders. The problem is that someone who disagrees with some values of British values isn't necessarily going to go on a murderous rampage.
What are these British values? Does May refer to the hundreds of towns destroyed by the Normans after their invasion? Maybe she refers to the mass murder of Peasants after the loss of the Peasant's revolt? Maybe she refers to the ancient British tradition of murdering Catholics and Protestants, depending on which religion the Crown adhered to on any specific day. What about the forced internment of Boers and Black Africans during the second Boer war? If these are British traditions I would say these Islamist extremists, who allegedly want to murderously destroy society, have adopted British values perfectly. (Examples taken from A short history of political violence in Britain by Martyn Everett.)