So we have 'The Battle Hymn of the Republic'

Straightforward enough, you'd think, but we have the Wikipedia article: http://en.wikipedia.org/w/index.php?title=...oldid=347638175

'The first verse is paraphrased and sung with racist substitutions in the film American History X by the character Seth in his van on his way to meet Danny'

and the lyrics are helpfully posted there.

Which is one thing, but someone has added in further racist lyrics, claimed as 'And other people have added their own chorus, which goes like this':

Except of course that the lyrics are only found on Wikipedia, so the 'other people' are only the idiot that added it in.....

Sourcing? Nope. Reverted in double-quick time? Nope. Reliable? Nope.