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Have you heard about the United States government's top-secret heart attack gun? Did you know the Federal Bureau of Investigation poisoned alcohol during prohibition? Was the government thinking about developing a super-secret "gay bomb"?

Chances are you're familiar with at least one of the above questions. If you are, you also probably know that most of what you've heard is nonsense.

However, as noted in the following chart from Criminal Justice Degree Hub, a site dedicated to law education, there is a small kernel of truth to be found in many of the more popular conspiracy theories from the 20th century.

From stories about vaccines to theories about how the U.S. government control of the media, there's something to be said for many of the following theories (which probably these theories persist even to this day):

Hailing from South Bend, In., Becket Adams is one of 12 children. He graduated with a BA in history in 2008 before enrolling in a Master of Science in Business Analysis program two years later (after waiting tables and selling guitars) at The Catholic University of America. He has interned with The National Journalism Center and had the opportunity to serve as chief research assistant to both David Freddoso and The Wall Street Journal's Stephen Moore. Becket joined The Blaze after graduating from CUA and The NJC.