Teresa Prekerowa was a Polish historian who was a high schooler in Warsaw during the Holocaust. When the Nazis started forcing Warsaw’s Jewish population into a designated neighborhood (or ghetto), most non-Jewish residents simply cut ties with their Jewish friends and allowed the Nazis to move forward with their plans. However, Prekerowa started visiting the ghetto, “bringing food and medicine,” and helping people escape. Snyder uses this as a shining example of how citizens must “stand out” against the status quo in times of tyranny.