Real controversies and conspiracies, and well-documented crimes committed by a government whether in the present or the past.
Source: Youtube.com
See article: 911-questions.com
Pilot Expert, Russ Wittenberg, who actually flew the planes that hit the South Tower and the one who "allegedly" crashed in Shanksville Speaks Out.
Also explains the fundamental physics about the planes hitting the Towers.
Pilots for 9/11 truth