The mood of political optimism that pervaded Czechoslovakia during the Prague Spring unleashed abundant creative energies in the country that found expression mainly in filmmaking and movie posters. Young designers reactivated the Constructivist and Surrealist tradition of the interwar period as well as the visual poems popular in the 1920s. Contemporary art movements also had a noticeable influence, with posters increasingly conveying a subjective interpretation of the film being promoted.