Are the Klingons really racist? They are emphatically devoted to the Klingon way, but do they express the prejudice that their way is only available to those who share their biological race? I'm not being rhetorical with these questions. I may be forgetting clear examples of Klingon racism. But the only instance that comes to my mind of a Klingon expressing racial/species pride is Kor in "Errand of Mercy" suggesting that his species has an aggressive virtue the Organians lack, making him a tiger among sheep. And in that instance, Kor markedly shares the distinction with Kirk as a human; so while he may be demonstrating a racist/species-ist prejudice against Organians, it's not a species-ist prejudice exclusively for Klingons.
There is of course the fact that we don't see any non-Klingons in the Empire, but we don't see many non-humans in the Federation. In both cases, budgetary factors are at play, as well as a desire to make the stories legible by clearly marking who's who.
There is of course the fact that we don't see any non-Klingons in the Empire, but we don't see many non-humans in the Federation. In both cases, budgetary factors are at play, as well as a desire to make the stories legible by clearly marking who's who.