They only really actively prohibited defeatism during the war, and dissenting Hitler himself. The rest was free game for the press, according to Hans Schmidt's report. I suppose that's a given, because no one was stupid enough to push subversive messages in a happy, homogeneous nation under Hitler's rule. When a nation is healthy, common sense prevails. As for guns, again according to the report, they were made even more available with the removal of mandatory gun owning licenses, new gun clubs all over the Reich, and lots of gunsmiths in the business.