Mr. Aaronovitch also said that a significant portion of the educated Pakistani's believe 9/11 was a hoax put on by the Bush Administration. A former President of Malaysia, Mahathir Mohamad, was in favor of this and said that if the country could make Avatar, they could create this conspiracy theory. The Wikipedia article on 9/11 Conspiracy Theories is very helpful on this subject.
I will put his book on my list of books to review for a Thoughtful Thursday post.
Obviously, one must be concerned about any democracy whether it be participatory of otherwise, when people believe things that are not true. However, I have found no evidence that a participatory democracy would be more affected than a conventional one where demagogues could whip up the frenzy.