What if everything you love about Canada - things like its traditions, festivals, food, music etc, basically everything which makes Canada stand out as being Canada - were slowly being eroded away by a large minority of a certain group of foreign and second-generation foreign people whose traditions, festivals, foods, music, language, religion, their whole culture, started dominating your Canadian culture? That everything which is very maple-syruppy Canadian is slowly making way for a foreign culture, and that Canada is alowly becoming less and less Canadian and more and more foreign?
You wouldn't like it so much. You'd want it to stop. You'd want Canada to remain Canadian. Yet, at the same time, you expect the British to meekly and weakly and cowardly stand aside and allow the Islamification of their country and their great traditions (many of which are ancient) and festivals and religion and everything else which has made Britain be Britain for centuries and centuries. Why should we allow it? This is Britain. It should remain British and Protestant, not become foreign and Muslime.