Original sentence: Most proponents of the 9/11 truth movement believe that the perceived cover-up and anomalies in the official account can only be explained by the theory that members of the US Government planned, carried out and covered up the attack to pursue their own agenda, or at the very least, deliberately allowed the attacks to take place.The common proposition among all of the 9/11 conspiracy theory entrepreneurs is that the official account of the events of 9/11 is not true, and that the truth has been covered up by high-level officials and the official investigators
Edited sentence: Most members of the 9/11 truth movement believe that the perceived cover-up and anomalies in the official account can only be explained by the theory that members of the US Government planned, carried out and covered up the attack to pursue their own agenda, or at the very least, deliberately allowed the attacks to take place.The 9/11 truth movement embraces a political diversity of members, including left, right, pacifists, paleoconservatives, Greens, anarchists, and libertarians, and includes professionals from a wide range of backgrounds, including professors, physicists, engineers, scientists, pilots, intelligence and law enforcement officers, and government officials.The common belief among all members is that the official account of the events of 9/11 is not true, and that the truth has been covered up by high-level officials and the official investigators