World Trade Center (1973–2001)
In the immediate aftermath of the attacks, media reports suggested that tens of thousands might have been killed in the attacks, as over 50,000 people could be inside the World Trade Center, although the National Institute of Standards and Technology (NIST) estimated that approximately 17,400 occupants were in the towers at the time of the attacks. Ultimately, 2,753 death certificates (excluding those for hijackers) were filed relating to the 9/11 attacks in New York City, including one filed for Felicia Dunn-Jones, who was added to the official death toll in ; Dunn-Jones died five months later from a lung condition linked to exposure to dust during the collapse of the World Trade Center. Three other victims were then added to the official death toll by the city medical examiner's office: Dr. Sneha Anne Philip, who was last seen the day before the attacks; Leon Heyward, a man who developed lymphoma and subsequently died in 2008 as a result of dust ingestion during the events following the attacks to the Twin Towers; and Jerry Borg, who died in December 2010 of pulmonary sarcoidosis determined in June 2011 to be the result of dust from the attacks. 2,192 civilians died in and around the World Trade Center, including 658 employees of Cantor Fitzgerald L.P. (an investment bank on the 101st–105th floors of One World Trade Center), 295 employees of Marsh & McLennan Companies (which was located immediately below Cantor Fitzgerald on floors 93–101, the location of Flight 11's impact), and 175 employees of Aon Corporation. In addition to the civilian deaths, 343 New York City Fire Department (FDNY) firefighters were killed in the attacks, as well as 71 law enforcement officers, including 37 members of the Port Authority Police Department (PAPD) and 23 members of the New York City Police Department (NYPD). Ten years after the attacks, remains of only 1,629 victims had been identified. Of all the people who were still in the towers when they collapsed, only 20 were pulled out alive.
9/11 Truth movement
In the aftermath of the September 11 attacks, different interpretations of the events that questioned the account given by the U.S. government were published. Among others, Michael Ruppert and Canadian journalist Barrie Zwicker, published criticisms or pointed out purported anomalies of the accepted account of the attacks. French author Jean-Charles Brisard and German authors Mathias Bröckers and Andreas von Bülow published books critical of media reporting and advancing the controlled demolition thesis of the destruction of the World Trade Center towers. In September 2002, the first "Bush Did It!" rallies and marches were held in San Francisco and Oakland, California organized by The All People's Coalition.
In October 2004, the organization 9/11 Truth released a statement, signed by nearly 200 people, including many relatives of people who perished on September 11, 2001, that calls for an investigation into the attacks. It also asserted that unanswered questions would suggest that people within the administration of President George W. Bush may have deliberately allowed the attacks to happen. Actor Edward Asner, former presidential candidate Ralph Nader, former congresswoman Cynthia McKinney, former assistant secretary of housing Catherine Austin Fitts, author Richard Heinberg, Enver Masud, founder of The Wisdom Fund, professors Richard Falk of the University of California, Mark Crispin Miller of New York University, Douglas Sturm of Bucknell University, Burns H. Weston of the University of Iowa College of Law and others signed the statement. In 2009, Van Jones, a former advisor to President Obama, said he hadn't fully reviewed the statement before he signed and that the petition did not reflect his views "now or ever."