Social Democratic Party of Germany

Rosa Luxemburg (German: [ˈʁoːza ˈlʊksəmbʊʁk] listen); Polish: Róża Luksemburg; also Rozalia Luksenburg; 5 March 1871 – 15 January 1919) was…

Karl Paul August Friedrich Liebknecht (German: [ˈliːpknɛçt] listen); 13 August 1871 – 15 January 1919) was a German socialist, originally…