Spartacus League
Rosa Luxemburg (5 March 1871 – 15 January 1919) was a Marxist theorist, philosopher, economist and revolutionary socialist. In 1915, after the Social Democratic Party of Germany supported German involvement in World War I, she and Karl Liebknecht co-founded the anti-war "Spartakusbund" ("Spartacus League"), which eventually became the Communist Party of Germany (KPD).