Art And The People
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Opponents of the Right-Wing Kapp-Lüttwitz Putsch, Berlin, Germany, 1920; and the Walter Gropius Memorial to the War Dead, Weimar, Germany, 1921/22. (Later destroyed by the Nazi's as degenerate art).
Photo credits: Published outside of U.S. prior to 1923 and hence public domain in the United States. Via Wikipedia.