August Bebel
Under Hirschfeld's leadership, the Scientific-Humanitarian Committee gathered 6000 signatures from prominent Germans on a petition to overturn Paragraph 175. Signatories included Albert Einstein, Hermann Hesse, Käthe Kollwitz, Thomas Mann, Heinrich Mann, Rainer Maria Rilke, August Bebel, Max Brod, Karl Kautsky, Stefan Zweig, Gerhart Hauptmann, Martin Buber, Richard von Krafft-Ebing, and Eduard Bernstein.