Fear plain and simple. That is what fuels it in my opinion. I have not heard anyone make a decent argument for the case. Even the ones I have heard speak about it that are consumed with the notion can't make a decent case for why they think that. Fear is the only thing I can think of.Change from the norm is another aspect. They are fearful when things aren't exactly as they have always been. Bush has fed on these fears hard core for 8 years now. People are truly scared and it comes out in odd ways.