Karl Liebknecht

Karl Paul August Friedrich Liebknecht (13 August 1871 – 15 January 1919) was a German socialist, originally in the Social Democratic Party of Germany (SPD) and later a co-founder with Rosa Luxemburg of the Spartacist League and the Communist Party of Germany which split away from the SPD. He is best known for his opposition to World War I in the Reichstag and his role in the Spartacist uprising of 1919. The uprising was crushed by the SPD government and the Freikorps (paramilitary units formed of World War I veterans). Liebknecht and Luxemburg were executed.