[1] In 1919, the coffins of Karl Liebknecht and Rosa Luxemburg, co-founders of the Communist Party of Germany were buried in a mass grave in a remote section of the cemetery.
[4] Unveiled in 1926, the Monument to the Revolution was erected in front of the mass grave where the coffins of Karl Liebknecht and Rosa Luxemburg had been interred in 1919.
[5][6] The current Memorial to the Socialists (German: Gedenkstätte der Sozialisten) stands close to the cemetery's main gate and was inaugurated by Wilhelm Pieck in 1951.
The central garden roundel is dominated by a porphyry stele or obelisk with the words Die Toten mahnen uns (English: The dead remind us), which is surrounded by 10 graves commemorating foremost socialist leaders, namely: Karl Liebknecht, Rosa Luxemburg, Ernst Thälmann, Wilhelm Pieck, Walter Ulbricht, Franz Mehring, John Schehr, Rudolf Breitscheid, Franz Künstler (politician) [de], and Otto Grotewohl.
Also in the semi-circular brick wall is a large red marble tablet recording the names of 327 men and women who gave their lives in the cause of fighting Fascism between 1933 and 1945.