Members of the Social Democratic Reichstag Caucus (1889) The Social Democratic Reichstag deputies pictured here are (seated, from the left): Georg Schumacher, Friedrich Harm, August Bebel, Heinrich Meister, and Karl Frohme; (standing, from left): Johann Dietz, August Kühn, Wilhelm Liebknecht, Carl Grillenberger, and Paul Singer. This photograph by Julius Braatz was taken in the foyer of the Reichstag in 1889.