Oh, you know, they just can’t help their filthy, non-unicorn selves! It’s a shame really.
I never will be able to understand how any pony can seriously think that way. Anxious or nervous around other races? Fine. Judgmental? Maybe it’s conditioned, or reinforced during upbringing.
But to think you’re better than some pony else because of your race? That will never, ever add up.