In my experience, Republicans and those who identify with the conservative movement are the group that is most reluctant to look at the evidence that the US government lied to us about 9/11.
Conservatives would probably say that it is just another example of bleeding heart liberals indulging in knee jerk Bush bashing, with the added bonus of providing a lily-livered excuse to end our glorious mission to bring democracy to the Middle East. Cause we know that all liberals hate war, no matter how justified. If hordes of angry Islamo-fascists with Uzis were scrambling up the beach at Coney Island, liberals would probably first want to try diplomacy, right?
If you find yourself nodding in agreement to what I just wrote, you should check out the column by Israeli Sam Vaknin in The Conservative Voice, which yesterday was a 6,048 word interview with Professor Emeritus David Ray Griffin. He provides a forum for one of the leading lights of the 9/11 truth movement to lay out his argument in a methodical fashion that will get even conservatives questioning the story we were all told about that fateful day.
An excerpt from that interview:
Second, the White House and the Pentagon also later found it necessary to distort the truth about where Vice President Cheney, Secretary of Defense Rumsfeld, and General Richard Myers were between 9 and 10 AM that morning. Richard Clarke reported in his book, "Against All Enemies" that Myers and Rumsfeld were in the Pentagon's teleconferencing studio participating in his White House video conference, but Myers and Rumsfeld both claimed that they were elsewhere. Although Clarke and Secretary of Transportation Norman Mineta reported that Cheney was down in the bunker before 9:20, the 9/11 Commission claimed that he didn't enter it until almost 10:00 (20 minutes after the attack on the Pentagon and just before the crash of Flight 93). And although Clarke reported that he received the shootdown order from Cheney by 9:50 (at least 13 minutes before Flight 93 went down), the Commission claimed that Cheney did not issue this authorization until after 10:15 ("9/11 Contradictions," Chs. 2-7).
Third, much of the evidence that the planes had been hijacked was provided by people who reported that they had received cell phone calls from relatives or crew members on board the planes. About a dozen cell phone calls were reported from Flight 93 alone. But after the 9/11 Truth Movement publicized the fact that cell phone calls from high-altitude airliners had not been technologically possible in 2001, the FBI changed its report, saying that the only cell phone calls from any of the four airliners were two that occurred when Flight 93 had descended to 5,000 feet (at which altitude they would have been at least arguably possible). This change of story meant, among other things, that the FBI, having stated in an affidavit in 2001 that American 11 flight attendant Amy Sweeney had made a 12-minute cell phone call, needed to fabricate a very implausible tale to support its revised claim that she had actually used an onboard phone ("The New Pearl Harbor Revisited" [henceforth NPHR], Chs. 3 & 6).
Fourth, the military's original explanation as to why it was unable to intercept the first three flights before they hit their targets was so obviously problematic that it needed to be changed. Members of the 9/11 Truth Movement had shown that, even if the FAA had been as slow in notifying the military as NORAD claimed in 2001, there had still been sufficient time for the flights to have been intercepted, especially Flights 175 and 77. So the 9/11 Commission in 2004 simply created a new timeline, claiming, wholly implausibly, that the FAA had not notified the military at all about those two flights ("9/11 Contradictions," Chs. 10 & 11).