Indeed if ones own race is not being denigrated one would not feel embarrassed, although one may be embarrassed that racist material was created by their people. If ones own race is being denigrated then one may indeed feel embarrassment and perhaps also the anger and hopelessness. As for why exactly embarrassment if the purpose is to degrade by pointing some reason why the author holds your people in contempt and you are indeed hopeless as to stop it, shame and embarrassment is often what is felt.

In another post you talked about people getting mad at the image without context What context are we missing exactly. I do not feel ill informed or angry. But I could indeed be missing something, can you explain the context? If you where to say it's because of the LLM adding more context then that could be plausible, but why the medieval and hemp-rope? I know how sensitive the western companies have been on their models getting rid of negative racial stereo-types, going as far as to avoid and modify certain training data, would you accept an LLM producing negative stereotypes or tending to put one particular racial group into a submissive situation then others?

I really do feel like the idea that the LLM would just take the prompt A human male being ridden by a horse to include all those other details and go straight for a darker, somber tone and expression and a dynamic of domination and submission rather then a more humorous description, unlikely.