The document summarizes the rise of extremist political parties in Germany in the 1920s and 1930s, including the Communist Party of Germany (KPD) and the Nazi Party (NSDAP). It describes how both parties grew their paramilitary wings but the Nazis saw faster growth through appealing to nationalist workers and those dissatisfied with the economic situation. It also outlines the persecution of the KPD and Social Democratic Party that began when the Nazis rose to power in 1933.