De analyserer beviser fra angrebene, diskuterer forskellige teorier om, hvad der skete under angrebene og forsøger at få lavet en ny undersøgelse af angrebene.[9][10][11][12][13]
Medlemmer af bevægelsen kalder sig for "truthers".[kilde mangler]
^Barber, Peter (7. juni 2008). "The truth is out there". Financial Times. Arkiveret fra originalen 3. juni 2009. Hentet 2009-05-23. an army of sceptics, collectively described as the 9/11 Truth movement
^Powell, Michael (8. september 2006). "The Disbelievers". Washington Post. Hentet 2009-05-30. The loose agglomeration known as the '9/11 Truth Movement'
^Hunt, H.E. (19. november 2008). "The 30 greatest conspiracy theories - part 1". Daily Telegraph. London. Hentet 2009-05-30. A large group of people - collectively called the 9/11 Truth Movement
^Ravensbergen, Jan (2. maj 2010). "9/11 skeptics to speak at UQAM". Montreal Gazette. Arkiveret fra originalen 4. maj 2010. Hentet 2010-05-03. two leading voices of what’s known as the 9/11 truth movement