Its members also belonged to other art movements and groups during the Weimar Republic era, such as architect Walter Gropius (founder of Bauhaus), and Kurt Weill and Bertolt Brecht (agitprop theatre). The artists of the November Group kept the spirit of radicalism alive in German art and culture during the Weimar Republic. Many of the painters, sculptors, music composers, architects, playwrights, and filmmakers who belonged to it, and still others associated with its members, were the same ones whose art would later be denounced as "degenerate art" by Adolf Hitler.