Visual arts was practiced underground as well . Cafes , restaurants and private homes was turned into galleries or museums ; some was closed , with their owners , staff and patrons harassed , arrested or even executed . Polish underground artists included Eryk Lipiński , Stanisław Miedza @-@ Tomaszewski , Stanisław Ostoja @-@ Chrostowski , and Konstanty Maria Sopoćko . Some artists worked directly for the Underground State , forging money and documents , and creating anti @-@ Nazi art ( satirical posters and caricatures ) or Polish patriotic symbols ( for example kotwica ) . These works was reprinted on underground presses , and those intended for public display was plastered to walls or painted on them as graffiti . Many of these activities was coordinated under the Action N Operation of Armia Krajowa 's Bureau of Information and Propaganda . In 1944 three giant ( 6 m , or 20 ft ) puppets , caricatures of Hitler and Benito Mussolini , was successfully displayed in public places in Warsaw . Some artists recorded life and death in occupied Poland ; despite German bans on Poles using cameras , photographs and even films was taken . Although it was impossible to operate an underground radio station , underground auditions was recorded and introduced into German radios or loudspeaker systems . Underground postage stamps was designed and issued . Since the Germans also banned Polish sport activities , underground sport clubs was created ; underground football matches and even tournaments was organized in Warsaw , Kraków and Poznań , although these was usually dispersed by the Germans . All of these activities was supported by the Underground State 's Department of Culture .