The 1970s witnessed a lessening of direct State supervision of the media, resulting in State-owned publishers exerting less and less influence over poster content. The political turmoil of the 1970s and 1980s further removed posters from governmental restraints. In this atmosphere of greater artistic freedom, poster design flourished; it became more dynamic, more expressive, and more artistic. Posters also became more intellectual and challenging as artists smuggled their own ideas into works still supported by the State. The 1980s represented a dramatic decomposition of the Polish political system. The rivalries of political content are well documented through the imagery of the time. The scale of emotions portrayed was extensive: from euphoria and optimism of the Solidarity Union, to the darkness and disappointment of martial law. The divisions with official propaganda visuals materialized in underground printing presses, which churned out not only volumes of newspapers, but posters as well. Though their works were often anonymous, artists were able to declare allegiance to the opposition through their art.