Everyone believes at least one of these. Probably. Maybe that's just a theory I have. Of this list of widely-known conspiracy theories, which do you believe is true? Add the ones that are missing (there are so many!), vote on the ones you believe, and if you are really serious about it, re-rank the list with the ones you believe in the most at the top!
http://www.ranker.com/list/the-conspiracy-theories-you-believe-are-true/desertrat89,
Moon Landing Was Faked
New World Order
Global Warming Is a Hoax
The CIA Started AIDS
The Reptilian Elite
Revolutionary Free Energy Technology Is Being Suppressed by Governments
9/11 Cover-Up
Area 51 Holds Alien Secrets
Roosevelt Knew About the Pearl Harbor Attack in Advance
The JFK Assassination