The Independent Social Democratic Party of Germany was a short-lived, left-wing political party in Germany during the late German Empire and early Weimar Republic. It was established in 1917 by member
Karl Liebknecht in 1912. He cast the first vote in the imperial Reichstag against war funding.
Hugo Haase, one of the first chairmen of the USPD, c. 1916
The Council of the People's Deputies. From left to right: Wilhelm Dittman (USPD), Otto Landsberg (MSPD), Hugo Haase (USPD), Friedrich Ebert (MSPD), Emil Barth (USPD) and Philipp Scheidemann (MSPD)
Rosa Luxemburg circa 1911. She was a member of the Spartacus League within the USPD before leaving to co-found the Communist Party of Germany with Karl Liebknecht.
Communist Party of Germany
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The Communist Party of Germany was the major far-left political party in the Weimar Republic during the interwar period, an underground resistance movement in Nazi Germany, and a minor party in Allied
Independent Social Democratic Party of Germany
…members of the Social Democratic Party of Germany (SPD) who opposed Germany's involvement in World War I. After much of the USPD's membership joined the Communist Party of Germany (KPD) in 1920, the remainder returned to the SPD in 1922, with the exception of an insignificant faction that lasted until 1931. The Social Democratic…
Rosa Luxemburg
Karl Liebknecht
Members of the Reichstag faction of the KPD c. 1921. Sitting from left to right: Joseph Herzfeld, Clara Zetkin, Emil Eichhorn, Georg Berthelé. Standing from left to right: Max Heydemann, Walter Stoecker, Wilhelm Koenen, Wilhelm Bartz, Heinrich Malzahn, Paul Frölich.
KPD in Essen, 1925