Humans, trolls, dwarfs, vampires, werewolves, golems, zombies, Igors, the odd talking dog - all are welcomed to be bribed, robbed and murdered within its walls. Ankh-Morpork's got the room for commentary like this passage in Snuff (2011) (👇):

> ..."And so one at a time we all become human - human werewolves, human dwarfs, human trolls… the melting pot melts in one direction only, and so we make progress."

Heavy stuff: you're equals in Ankh-Morpork ON THE CONDITION that you act human.

So surely there's also plenty of room for bad, old-fashioned human-on-human racism.

Pratchett thought so, too. Jingo (1997) is a sharp rebuttal to, "Racism is not a problem on the Discworld."

Take the characterisation of 71-Hour Ahmed, bodyguard to the Klatchian Prince Khufarah. From Sam Vimes' perspective, Ahmed acts every bit the stereotype, compared to the honourable, educated Prince. The eye dialect and clunky Morporkian comes out in full force (👇):

> “If hyou changing your mind, offendi, I give hyou twenty-five camels, no problem,” he said, pulling a clove from his teeth. “May your hloins be full of fruit.”

At the start, Ankh-Morpork and Klatch are in diplomatic dispute over what to do about the newly-emerged island of Leshp, smack-dab in the middle of their waters.

We read the hum-drum, everyday racism and xenophobia through the mouths of Sergeant Colon and Corporal Nobby Nobbs

> “And o’course, they’re not the same color as what we are,” said Colon. “Well…as me, anyway,” he added…

> “Constable Visit’s pretty brown,” said Nobby. “I never seen him run away. If there’s a chance of giving someone a religious pamphlet ole Washpot’s after them like a terrier.”

> “Ah, but Omnians are more like us,” said Colon. [...] "Just the same as us underneath.

Never underestimate anyone's capacity to discriminate against foreigners over the tiniest things - especially Colon, the median voter in a 'one man, one vote' city state (👇):

> "…Whereas we’re more civilized, see, and we got a lot more stuff around to count, so we invented numbers. It’s like…well, they say the Klatchians invented astronomy—”
“Al-tronomy,” said Nobby helpfully.