By Max Musson: From time to time, the advocates of multiculturalism and multiracialism trot out the hackneyed assertion and untruth that one or more of the various immigrant groups in this country are perfectly entitled to colonise Britain because their forebears fought for this country during the two World Wars, and in this centenary year in which we are as a nation commemorating the sacrifices of our grandfathers’ and great-grandfathers’ generation during World War One,…