Dissemination of propaganda material of unconstitutional organisations
(1) Whosoever within Germany disseminates or produces, stocks, imports or exports or makes publicly accessible through data storage media for dissemination within Germany or abroad, propaganda material
1. of a political party which has been declared unconstitutional by the Federal Constitutional Court or a political party or organisation which has been held by final decision to be a surrogate organisation of such a party;
2. of an organisation which has been banned by final decision because it is directed against the constitutional order or against the idea of the comity of nations or which has been held by final decision to be a surrogate organisation of such a banned organisation;
3. of a government, organisation or institution outside the Federal Republic of Germany active in pursuing the objectives of one of the parties or organisations indicated in Nos 1 and 2 above; or
4. propaganda materials the contents of which are intended to further the aims of a former National Socialist organisation, shall be liable to imprisonment not exceeding three years or a fine.
(2) Propaganda materials within the meaning of subsection (1) above shall only be written materials (section 11(3)) the content of which is directed against the free, democratic constitutional order or the idea of the comity of nations.
(3) Subsection (1) above shall not apply if the propaganda materials or the act is meant to serve civil education, to avert unconstitutional movements, to promote art or science, research or teaching, the reporting about current or historical events or similar purposes.
(4) If the guilt is of a minor nature, the court may order a discharge under this provision.
Before you criticize something you should check what you are criticizing. Also I don't think it needs an explanation why there is an extra emphasis for National Socialist organisations.
And I don't think the law is stupid unless someone wants to wave a extremist flag in his front garden...