A childhood belief about wars

In 4th grade we had to read "Number the Stars" (for those who don't know, that's a children's book about how the people of Denmark helped Jews escape the Nazis). Awesome book, except that I became convinced that the Nazis were going to come and get me. This is a bit strange because there is a section in the book where a Jewish little girl is staying with her Christian friends and the family has to convince some Nazi soldiers that she's thier daughter, using the name and baby picture of one of thier real daughters who had died years ago. The dead daughter happened to have dark hair when she was born (and which later turned blonde). The dark-haired baby picture made the soldiers accept that the dark-haired Jewish girl could have been born to the blonde parents. Given that I am a natural blonde myself, and so much was made of blonde hair meaning "not Jewish", I have no idea how I could have believed the Nazis were after me, too.