On 16 January 1919 Pieck, along with
Rosa Luxemburg and
Karl Liebknecht, was arrested in Berlin's
Wilmersdorf district and taken to the Eden Hotel. Liebknecht and Luxemburg were then killed while "being taken to prison" by a unit of
Freikorps. While the two were being murdered, Pieck claimed that he managed to escape. Due to lingering suspicions about Pieck's reported escape, KPD chairman
Ernst Thälmann called Pieck before a party court chaired by
Hans Kippenberger in 1929. The party court's decision was never published and Kippenberger was executed in Moscow after a secret trial in 1937. According to
Waldemar Pabst (the officer who gave the order to kill Liebknecht and Luxemburg), Pieck did not actually escape, but was released in return for providing details about the military plans and hiding places of other KPD members. During the
Ruhr uprising, Pieck was sent by the KPD as a political advisor to the
Ruhr Red Army. He was a founding member of the
International Red Aid in 1922, serving first on its executive committee then as chairman from 1937 to 1941. In 1924 he became the first chairman of the
Rote Hilfe, serving until
Clara Zetkin succeeded him the next year. From February 1926 to November 1929 he served as political leader of the KPD's
Berlin-
Brandenberg district, but was removed from office and replaced by
Walter Ulbricht for not supporting
Ernst Thälmann during the
Wittorf Affair. portrait, 1928 Pieck held several elected offices in the
Weimar Republic. He served in the
Landtag of Prussia from 1921 to 1928 and again from 1932 to 1933 (leading the party in that body), the
Reichstag from 1928 to 1933, the
Berlin City Council from 1929 to 1933, and the
Prussian State Council from 1930 to 1932. ==Nazi years and Moscow exile==