When I moved to Berlin, I developed a habit of stopping by the Stolpersteine (“stumbling stones” memorials) and reading about Jewish people who were taken from their homes and transported to the concentration camps. There is one building on my way to the U-Bahn from which 16 people were taken. But it was Lucie’s stone that chilled me to the core. Hers is a single memorial stone in front of a large building. One little Stolperstein. All that is known of Lucie is that she was taken away at the age of 61. It made me think about all the...