 As the realization matured in him that the daily struggle in Germany must primarily be directed against the emerging fascism and all reactionaries.In 1932 and 1933, he published the left-liberal magazine "Der Gegner" or "The Opponent", which was founded in 1931 by Franz Jung and modelled on the "Plans" magazine.The poet Ernst Fuhrmann, the artist Raoul Hausmann, the writers Ernst von Salomon and Adrien Turel and the Marxist theoretician Karl Korsch, among others all collaborated in writing the magazine.