Normally songs are posted by people who think they are worth singing or listening to. This time it was posted under pressure by someone who quite rightly thought it was offensive rubbish.
I hope this this isn't a precedent, and that it doesn't mean that if someone does ask for the Horst Wessell song I should feel a duty to post the words, or give a link to a Nazi site where they can be found. (I just checked that is true, with a standard search engine - and I can tell you there are even worse songs than that out there.)