http://www.latimes.com/news/nationworld/nation/la-na-conspiracy10sep10,0,5347883.story?coll=la-home-headlines<snip>
As New York readied for another anniversary of the Sept. 11 attacks, conspiracy theorists and researchers who belong to a group known as the 9/11 Truth Movement gathered in Greenwich Village. Among them were proponents of the "LIHOP" theory, who believe that members of the government "let it happen on purpose," and the "MIHOP" theory, who hold that government officials "made it happen on purpose."
Polls show that many Americans distrust the government on the subject of Sept. 11. A Zogby International poll taken in May found that 42% believed the government concealed evidence that contradicts official accounts. A Scripps Howard-Ohio University poll taken in August found that 36% believed it "very likely" or "somewhat likely" that federal officials allowed the attacks to occur because "they wanted the United States to go to war in the Middle East."
The theories — especially the notion that the towers fell in a controlled demolition — have become widespread enough to prompt official responses.
Last week, Brigham Young University announced that physics professor Steven E. Jones, co-chairman of the group Scholars for 9/11 Truth, would be put on indefinite leave while authorities investigated his claims that the buildings were intentionally demolished using explosives.
"Culturally, as a society, it becomes unhealthy," said Christopher Farrell of the conservative think tank Judicial Watch, which successfully filed suit against the government seeking the release of a video showing American Airlines Flight 77 hitting the Pentagon. The think tank was hoping to put to rest beliefs that the explosion was caused by a missile.
"If an individual demonstrated this sort of behavior, medical health professionals would recommend they treat it," said Farrell, a former military intelligence officer and the organization's director of investigations and research. "There's healthy skepticism, and then there's unhealthy."