Any one of us can make a video documentary that purports the existence of a race of humanoid reptilian creatures that controls humanity (Yes... there are morons out there that believe that too).

Would you also require an explanation as to why that wasn't true before blindly believing it was true?

There are no "men behind the curtain" controlling the world. The world indeed has many powerful people and entities who seek more power and more wealth. However their interests rarely align and more often conflict and compete with each other in that quest for wealth and power.

There are no worldwide conspiracies acting in concert. There is no Illuminati.

Conspiracy theories are for the paranoid and those who are easily duped. Conspiracy theories feed into many people's sense of powerlessness. Unfortunately there are too many people easily sucked in by this type of stuff. Use your head. Don't be one of them.

The government can hardly keep any secrets, nevermind the thousands of people that would be required for any type of government conspiracy.