Racism was not a problem on the Discworld, because - what with trolls and dwarfs and so on - speciesism was more interesting. Black and white lived in perfect harmony and ganged up on green.
Terry PratchettHe's probably their battle poet, too." "You mean he makes up heroic songs about famous battles?" "No, no. He recites poems that frighten the enemy....When a well-trained gonnagle starts to recite, the enemy's ears explode.
Terry Pratchett