Since Wikipedia has one rule, called NPOV, there never will be a problem with that, cause it is allowed to write "who lies about the holocaust" (we ourself would never lie about, just talking about these lies). It even is allowed to have pictures with the "Hakenkreuz" since it is allowed to show them for example in an educational context.
Your response is reassuring, but it also seems to negate the need for two separate German language databases. It shows that the intent of the person using this material is very important. There are people who will continue to submit bad material, but as long as we make appropriate edits when we find it we should be safe.
I would expect that this law would also extend to certain neo-Nazis who use other symbols that are different form though still modelled on the "Hakenkreuz" (swastika in English).
Your are right. That should concern some forbidden neo-Nazis-partys like FAP and there symbols. But I do not know exacly which symbols are allowed and which are forbidden.
I think that concerns all symbols. They are not forbidden by themselves, there forbidden cause the organisations using them are forbidden. For example also PKK symbols are forbidden. But I am not a laywer...
--Ivo Köthnig