The movie Loose Change (Rowe, 2005) is a documentary designed to expose “what really happened” on September 11, 2006. [...] Among the questions raised are the realities of the crash of United Airlines Flight 93, the collapse of the Twin Towers and World Trade Center 7 due to an internal demolition. Additionally, they examine whether the damage to the Pentagon building was caused by an airplane crash, as well as other alternative “real” explanations. In posing these arguments, the film is seen as part of a larger discourse often referred to as the “9/11 Truth Movement.” Though not the first of these September 11th conspiracy theories, it is the most popular representation of these claims.

http://www.trinity.edu/adelwich/documentary/comm3325.viewing.guide.jenny.stalder.pdf