In early November 1944, Anne was put on transport again. Together with her sister, she was deported to the Bergen-Belsen concentration camp. Her parents stayed behind in Auschwitz. The conditions in Bergen-Belsen were horrible, too, there was a lack of food, it was cold, and Anne, like her sister, contracted typhus. In February 1945 they both died owing to its effects, Margot first, Anne shortly afterwards.
The Communist Party of Germany (KPD) was the largest Communist Party in the world outside of the Soviet Union, until it was destroyed by the Nazis in 1933. In the 1920s and early 30s, Communists and Nazis often fought each other directly in street violence, with the Nazi paramilitary organizations being opposed by the Communist Red Front and Anti-Fascist Action. After the beginning of the Great Depression, both Communists and Nazis saw their share of the vote increase. However, while the Nazis were willing to form alliances with other parties of the right, the Communists refused to form an alliance with the Social Democratic Party of Germany, the largest party of the left. After the Nazis came to power, they quickly banned the Communist Party under the allegation that it was preparing for revolution and that it had caused the Reichstag fire. Four thousand KPD officials were arrested in February 1933, and by the end of the year 130,000 communists had been sent to concentration camps.
Heinrich Himmler's Schutzstaffel (SS) took full control of the police and the concentration camps throughout Germany in 1934–35. Himmler expanded the role of the camps to hold so-called "racially undesirable elements", such as Jews, Gypsies/Romanis/Sintis, Serbs, Poles, disabled people, and criminals. The number of people in the camps, which had fallen to 7,500, grew again to 21,000 by the start of World War II and peaked at 715,000 in January 1945.