Hoyd vs Racism and Bingen

In the letters he has said that he has a vendetta against rasa is and bobiden. So i could see them as being partially responsible for the loss off whoever hoyd is attached to. But at the very end of this we have the challenge, almost from hoyd to frost, where he says, i would not think it my vendetta that should worry you, old friend. And then what i guess this vendetta would be against whatever or whoever killed that person. It's definitely something worth seeing the beginnings of in all these different books, and it's getting worse and worse and worse.