Can you give an example of a documentary where the person telling the story believed it to be true, but it turned out to be false?

Read also:

• Why is the left keep misrepresenting what Trump said about his daughter? When asked if he would date her if he weren’t her father, it simply reflected pride in raising a smart, respectful, and loving daughter with good morals all men want that no?
• Why is it difficult to get a job?
• Why do women wear less clothes compared to men?
• Why do Indian parents force their kids to do stuff?
• Why did the American's mulberry harbor not hold up after D-Day?
• How does growing up in chaos affect a child as they become an adult?
• Were Dalits prohibited from drinking water from wells in ancient times? Is there any evidence to support this claim?
• How does it feel to watch your wife get fucked hard?
• If you received hand-me-downs as a child, how did they make you feel?
• It seems that I am cursed with bad luck. How do I break such a curse?
• Why did it take seven days for troops with helicopters, equipment, supplies, food, and water to be dispatched to southeast storm zones?
• What thing happened to you as a child that you haven’t let go of to this day?