I also have some ideas.
[img width=500 height=275]http://i.imgur.com/xP8Wwyt.gif[/img]
Well they didn't do it alone; they also had the backing of the Illuminati Freemason lizard-beings, led by the High-Lord-Moon-Landing-Faking-JFK-assassin Xenu. And if you can't believe what David Icke and Alex Jones tell you, then what can you believe?