JAY JG said:
What if I want to describe the British National Party's official policy on asylum seekers? Wouldn't the best way to do that be to cite the official policy itself? It isn't produced by a reputable organisation, but it's pretty authoritative on official published party policy.
That's not the issue. Citing the National Party on it's own policy is perfectly reasonable. However, the real issues occur when people want to cite webpages like this http://www.theforbiddenknowledge.com/hardtruth/fake_invasion.htm on the George Bush article: to prove that George Bush "first started selling drugs to our children. The drug money was used to finance the deep underground alien bases."
That site is clearly not authoritative on the activities of the younger Bush. It is, however, authoritative on the expressed opinions of the anonymous kook who wrote that piece.