With recent events I have been interested in the whys of all of this since I didn't know. On Wikipedia it lists The American Nazi Party as Far Left. Is this the case and if so what's up with that? It just didn't make sense to me.
Vandalism. Check the edit history.
(With apologies to the mods, but I don't think this benefits from a longer answer).
This was just changed by an anonymous user and has since been reverted. One of the perils of Wikipedia is that you will sometimes need to check the page history if you find seemingly baffling content.