Probably the murder of John F. Kennedy, followed by Area 51. I don't think 911 was a conspiracy unless you want to believe that our nations officials INTENTIONALLY ignored some obvious red flags. Like what? Oh I don't know, like the fact that one or more of the terrorists paid cash for a one way flight with little or no luggage. One or more terrorists went to flight school only with the desire to learn how fly and NOT LAND a plane--I guess they didn't look like drug smugglers and the desire to just know how to fly a plane and not land it, must have seemed like a cute joke by someone up in the FAA or FBI or CIA food chain. I do not believe for a minute that explosives were already in the World Trade Center. I believe 911 happened primarily because of idiocy.
J Edgar Hoover, treaty with extraterrestrial beings, in trade for advanced technology. Read about it in " Upon a Pale Horse " also read about UFO's flying in and out of the ocean witnessed by personal on a Navy ship, they were told if they ever talked about it they would be discharged without any benefits ever, some were even targeted! How wild is that?
That 9-11 was planned by the gov. Area 51 has aliens. Obama is destroying our country(which he is) he tried to get rid of our right of freedom of speech and and the ability to own guns. That the elite people will be able to buy a spot in an underground bunker for when 2012 happens(which it won't)