Those within Western democracies who seek or advocate for Sharia law are incompatible with the values of that society. It is, and should be, as simple as that. Those who seek Sharia law are extremists by definition.
That the Home Office should have to seek legislation to protect members of the armed services from abuse and threats tells you how woeful the situation is in Britain in regards to the active enemy within.
Islamic extremists who publicly demand that Sharia law replaces British legislation or try to enforce rules through their own courts could face prosecution under plans being worked on by the Home Office.
It is understood that the long-awaited counter extremism bill, which is expected to be brought forward shortly, will also seek to ban people from launching abusive social media attacks or making public protests against members of the armed forces.