Actually I think the "Truthers" (sic) are leftist. If 9-11 had happened on Clinton's watch, not one would be saying he was behind it. The only they're saying Bush, Rumsfeld, Cheney, et al, are involved in it is because they hate them because of their misperception of them as conservatives.
Freepers, who fancy themselves rightists, like to blame 9-11 on Clinton, saying he ignored Osama.
The belief in conspiracies depends on who you hate.
Believe me the truthers aren't largely comprised of 'leftists'; many are former left wing who have woken up to the phony left-right paradigm. I do think that as a whole, left wingers and democrats, as well as those not politically inclined, tend to be more receptive to the truth message. Old right and libertarians are already informed and don't need to be convinced of anything. the mainstream repubs and dumb neocon followers, who get their news from soundbytes, are the hardest to break through,.
First thing, forget any comment from YT. His backround includes velcro shoes, yogart cups, pug bowling and worries about being a faggot.
Here is the deal, over 50% of the 911 families, 90% of the NYC fireman and 70% of the NYC police, do not believe the government version of events.
I saw the program with Bill"Phone Sex"O'Reilly basically threatening everyone, saying "I'm coming after you!".
Guys like O'Reilly are cowards. He never has anyone of substance to "debate" him or confront him in person in the studio. All his smear "interviews" are on remote, where he can shout, talk over and cut your audio.
He is just a bag boy for the world/corporate/government fascists.