The Disbelievers

David Ray Griffin, whose book "The New Pearl Harbor" is a foundation of the "9/11 Truth Movement." (Helayne Seidman - For The Washington Post)

Griffin took the podium and laid down his ideas with calm and cool. He concluded:

"It is already possible to know beyond a reasonable doubt one very important thing: The destruction of the World Trade Center was an inside job, orchestrated by domestic terrorists," he says. "The welfare of our republic and perhaps even the survival of our civilization depend on getting the truth about 9/11 exposed."

The audience rose and applauded for more than a minute.

"Reality is a thin line between denial and paranoia."

-- Author unknown, but often quoted by the 9/11 truth movement

"Me?" You've asked the Rev. Frank Morales, the bohemian Episcopalian minister with the hipster goatee, where he stands on the nature of the conspiracy. We're standing in the ancient graveyard of St. Mark's Church in the Bowery on Second Avenue. "I lean to LIHOP."

The 9/11 truthers share a lieutenant colonel's love of acronyms. They divide themselves into LIHOPS and MIHOPS and differences are not trifling. LIHOP stands for "Let It Happen On Purpose," which means someone inside the U.S. government intentionally let the terror conspiracy go. MIHOP means "Made It Happen On Purpose," and its gradations center on whether Bush was in or out of the loop (a surprising number believe he was clueless) and whether the Mossad or British intelligence was dealt into the deal.

Morales, 57, who came out of the Lower East Side housing projects, spent days at Ground Zero performing last rites for the dead, many little more than a collection of body parts.

"I didn't presume to know who did it," he says. "There was a lot of shucking and jiving. I wonder at what point massive incompetence crosses over into negligent homicide."

To make sense of the truth movement's anger, you need to hit the rewind button to early 2001, with the hindsight of today. There was, as the 9/11 Commission hearings made clear, a bad moon rising. Warnings kept coming of a "high probability" of a "spectacular" terrorist attack. A national security adviser warned Condoleezza Rice there were terrorist cells, probably al-Qaeda guys, in the country. CIA chief George Tenet said the "system was blinking red."

A presidential bulletin on Aug. 6 had a catchy title: "Bin Laden Determined to Strike in U.S." Bush did not discuss it again with Tenet before Sept. 11.

So give the truth movement, many of whom are based in New York City, their props. They may be paranoid, but something nasty came our way. They pore over the paper trail with a Sherlock Holmesian intensity, alert to intriguing discrepancy.