Racial theories is a recurring idea in the book. "Daniel Half Human" takes place at a time when the Nazi party was gaining influence and taking power in Germany in the 1930s under Adolf Hitler. A central part of the Nazi philosophy was based on a supposed racial superiority of so-called aryan races such as the Nordic and German people, and a serious inferiority of other "races" such as Jews. under the Nuremberg Laws described in the book, Jews in Germany were persecuted and criminalized. During Kristallnacht, an event also depicted in the novel, Jewish homes and businesses were raided and synagogues burned in a deliberate action to intimidate Jews into leaving.