Where Caldwell is on sure ground is his insistence that "diversity" means more than a city full of colourful ethnic restaurants. Radically opposed cultures do grate against one another. One reason that mass immigration in the United States has worked reasonably well is that the bulk of this immigration -- generally labelled Hispanic or Latino -- fits reasonably well with dominant mores in the United States. "Latino culture, in its broad outlines, is like the American working-class white culture of forty years ago," Caldwell writes. [National Post] Read more