Multiculturalism today equals cultural Marxism. Some cultures are good at growing food, accessing energy, defending the country, and the hard sciences. Other cultures are good at other things, but it is not clear that those are things we vitally need. We have enough street mimes, musicians playing on the corner, and antiwar protestors but it is not at all clear that we need any at all. And we damn sure have more lawyers than we need.

So it is from each according to his cultural ability and to each according to his cultural need. And some cultures have more needs than others. When you have a country with a lot of design margin, created by the people with the vital capabilities, and thus inevitably by the inherently successful cultures, this is not a problem. When you have a country with less design margin, a condition that inevitably follows from the less successful cultures having too much influence, it is a problem. And when you have a country run by people who think that the problem is that the more successful cultures have too much influence, you end up with negative design margin, which pretty much describes Europe.

The people from China and India who come over here to study are not trying to figure out how to be street mimes.