Karl Marx, Friedrich Engels, August Bebel, Karl Kautsky, Rosa Luxemburg, Wladimir Iljitsch Lenin, Josef Stalin, Leo Trotzki, Antonio Gramsci, Otto Bauer, Karl Renner, James Connolly, Ho Chi Minh, Mao Zedong, Harry Haywood, Karl Radek, Alexander Abusch, Anton Ackermann & Stefan Bollinger
Karl Kautsky, August Bebel, Ernst Toller, Clara Zetkin, Franz Mehring, Ricarda Huch, Karl Radek, Rosa Luxemburg, Peter Kropotkin, Emil Ludwig & Leo Trotzki
