The full story requires subscription. It looks interesting. Perhaps someone can post the whole thing.
Liberalism suffers from a principle rule of dog breeding. When you isolate a small gene pool too tightly, you end up with troublesome weaknesses. Variety from outside is necessary to maintain strength.
Since they do not have contact with the populace ‘out there’, they become a cartoon. Any tightly isolated group will suffer from the same condition.
The article can be seen from the link on the middle of the page on:
http://www.realclearpolitics.com/?state=nwa
It will be on the morning June 6 page if viewing later.