9/11 conspiracy theories thrive 10 years on

Ten years on from 9/11, conspiracy theories over who carried out the attacks continue to thrive. Defying countless official and non-governmental enquiries, media reporting, and often common sense, many Americans fervently disbelieve that Osama bin Laden’s al-Qaeda sent 19 hijackers to execute the September 11, 2001 massacre. Duration: 02:18