Newspaper articles and news reports "which might jeopardize German-Danish relations" were outlawed.[1] Following the German assault on the Soviet Union on 22 June 1941, German authorities demanded that Danish communists be arrested. The Danish government complied and directed the police to arrest 339 communists using secret registers. Of these, 246, including the three communist members of the Danish parliament, were imprisoned in the Horserød camp, in violation of the Danish constitution.