My grandfather was a POW in Germany during WWII.
He spoke of being slave labour on the farms, so hungry they pulled huge purple onions from the dirt, and ate them raw, tears streaming down their faces. Hiding their "theft" from the guards.
He spoke of the time a cat wandered into their camp full of hungry men.
"You didn't!" cried my grandmother.
"No," he said, his voice breaking, even 30 years later. "By the time it got to me, there was none left."
And while they may not have a personal connection like mine, they can read. They know what the Nazis did to Jewish people, disabled people, LGBTQIA people, Roma people.
And they look at something that should only be in the History books, and they say, yes, let's have that happen all over again.