The truth is stranger than fiction. For this list, well be going over the strangest and most famous conspiracy theories that were actually conspiracy facts. Our countdown includes Roswell Cover-Up, The FBI Spied on Political Activists, Watergate Scandal, and more! Is there a theory you once believed that you now realize was a load of baloney? Tell us in the comments!Watch more great conspiracy videos here: Top 20 Biggest Conspiracy Theories of All Time: