When I was about 9 or 10 years old I read a fiction novel about a little Jewish girl growing up in the US in the years after WW2. In the book, she would play act with her friends about the war, and specifically, about concentration camps. I had no idea what they were talking about it. But, I assumed that it was something that the author of the story had just made up, and had nothing to do with real events.
A childhood belief about wars

others believed things like this
- I used to believe that concentration camps were camps where you went to improve your concentration.— Ragnar
- When ever someone said ''read aloud'' I assumed aloud was the title of a book. Lol.— Delaney
- I used to believe that what happened in science fiction/horror is movies was realAnon
- I used to believe that some first names were specifically for children and some were specifically for adults.— Marco
- Since Germans speak German, I thought Jewish people spoke Jewish.— Lori
- I grew up Jewish. Until I was about 10, I believed that everyone who wasn't Jewish was Catholic.— Philm35