 In March 1940 , all cultural activities came under the control of the General Government 's Department of People 's Education and Propaganda ( <unk> für <unk> und Propaganda ) , whose name was changed a year later to the " Chief Propaganda Department " ( <unk> Propaganda ) . Further <unk> issued in the spring and early summer reflected policies that had been outlined by Frank and Goebbels during the previous autumn . One of the Department 's earliest decrees prohibited the organization of all but the most " primitive " of cultural activities without the Department 's prior approval . <unk> of " low quality " , including those of an erotic or pornographic nature , were however an exception — those were to be popularized to appease the population and to show the world the " real " Polish culture as well as to create the impression that Germany was not preventing Poles from expressing themselves . German propaganda specialists invited critics from neutral countries to specially organized " Polish " performances that were specifically designed to be boring or pornographic , and presented them as typical Polish cultural activities . Polish @-@ German cooperation in cultural matters , such as joint public performances , was strictly prohibited . Meanwhile , a compulsory registration scheme for writers and artists was introduced in August 1940 . Then , in October , the printing of new Polish @-@ language books was prohibited ; existing titles were censored , and often confiscated and withdrawn . 
