This might be an answer to your question:
http://www.freerepublic.com/focus/news/2485940/posts?page=153#153
Regarding your link - scary stuff. But it still basically gets down to the one word I mentioned: FEAR.
In this instance the fear is sadly misplaced. We have more to fear from government tyranny and removal of all freedoms than nuclear winter. But then I would rather be dead than living in a gulag. I’m quirky that way.