This just in, it turns out all of the conspiracies revealed by movies like 'Loose Change' and 'Zeitgeist' have been proven true! Though one of the strongest arguments against the theories, aside from science and common sense, was the fact that there was absolutely no reasonable motive or anything to gain from any of the named conspiracies, it now turns out that we've found a suspect that who would do just that!
Here's a photo of the evildoer:

Yes, comicbook supervillain Doctor Doom is the one man who is purely evil enough and smart enough to be able to silence the thousands involved in the heinous plots and carry them out with absolutely no logic or reason except to be evil! I guess those folks at Loose Change were right all along. First he tried to kill Captain America, and now he's trying to ruin America. It all comes together friends, it all comes together.