Diversity isn't the issue. It's the inability to inculcate values of self-inclusion and membership in the greater whole, combined with the purely feudal societies from which they come. Give a man a fish, and he eats for a day, and teach a man to fish, and he eats for a lifetime aren't in keeping with their see-it, take-it, strong-man ethos. As a result, their increasing numbers and the maddening tendency of UK Liberals to throw themselves over the postal box for a good fucking have all but destroyed their society.