The majority of literate human beings with IQs of 80 or above now believe the US government is actively covering up major facts about the 9/11 attacks.
The majority of that group believes elements of the US government was actively involved in permitting or organizing the attacks.
All this is spite of a total media blackout, endless lying on the part of government officials, and ridicule of serious researchers.
A testament to the intelligence of human beings and the power of the Internet.