Just steal the big book of grudges for any setting involving dwarves, up to and including glorantha

The dwarf, explaining why (s)he’s racist against dwarfs: “They are small, stupid, smelly, greedy, too angry and prideful for their own good, and they have no concept of true individuality (and their players tend to be the least creative people at the table, at this point “the dwarf” is almost as generic as a human fighter), they all deserve to die, and if I had the time and power, I would kill every last one of them, ending with myself. … …TLDR? Fuck em, that’s why.”