Given Germany's history, I would find it more scary if they did NOT ban some of this stuff (the Horst Wessel Lied, swastika flags, etc.). When the fundamental message being conveyed by a song (either explicitly or implicitly) is "let's go kill the Jews and other racial inferiors," it may well be "art," but it's also a deliberate attempt to promote interracial violence. I can live with a little censorship.