'In the center of Bebelplatz, a glass window showing rows and rows of empty bookshelves. The memorial commemorates the night in 1933 when 20,000 “anti-German” books were burned here under the instigation of Goebbels. There's a plaque nearby that says something like “Where they burn books, they will also burn humans in the end.” '
It could be very small things that are horrifying. Just seeing one detail and the knowledge that came from that detail could be as frightening as death. It’s what your mind does with that information that could be frightening.