“The point is that everything great and iconic about this country comes when seemingly disparate parts are blended in revelatory ways. That merging simply doesn’t happen in places where people are separated by race and ethnicity and class. And it’s not only what makes American culture so rich, but it is also a big part of the reason America is so successful. When we see a good idea, we steal it; when we have a good idea, the rest of the world is welcome to it as well.”