So? What standpoint is without bias?
Assumption of Dishonesty? Assuming that everyone is lying?
That the imperial scholar is a propaganda?
You are saying that anyone that denies that Ulfric is a dangerous murderous psychopath is a holocaust denier. There is even no need to say that you simply talked about the "mentality", as a simple understanding of English will reveal the true intention.
As you said: anything to maintain your personal values, even if it's to attack the arguers, not the argument itself
Unfortunately the knowledge of simple english doesn't save you from reading comprehension.

Congratulations for repeating the same accusation that was also addressed below the post that has you fuming. Now if you could work past the term "holocaust denier"...
If I took your interpretation it would still mean both stormcloak and imperial apologists. I started with sentence on stormcloaks supporters, then what does the "visa versa" mean I wonder?
I think the view that it's propaganda comes not only from the writing style of the author of the book, but the fact that every other book about them notes that they perform human sacrifices, murder everyone that isn't forsworn, and surrender their mental faculties to hagravens.
Given that we've seen examples of each of those actually in game. I think the other books are a bit less biased.
It is apparent the tone used in the "The Bear of Markarth" is very opinionated. But I take issue with the interpretation of the piece after establishing that. There is more than one way to interpret it:
A. Book is trying to tack blame on Ulfric Stormcloak and his rebellion due to the current ongoing war.
B. The book doesn't actually state when it was published; so its entirely possible the account could be written right after the Markarth incident before the beginning of the civil war in skyrim. Noting the piece never makes a mention to "Stormcloaks" other than Ulfric's name. Then, if the stormcloak rebellion is not a factor, what is the interpretation ?
(Note : The markarth incident happened in 4E 176; There's no mentioned date when the rebellion was officially established, but high king Torygg was not killed until 4E 201 some 25 years later)
Then its entirely possible the piece can be taken as criticism and account of Ulfric Stormcloaks possible actions during the incident.
Or, if you like, propaganda for the empire to distance itself away from the actions of Ulfric that may infuriate the public.
I would be most grateful if you provided sources on "fact that every other book about them notes that they perform human sacrifices, murder everyone that isn't forsworn, and surrender their mental faculties to hagravens." or at least; the specific passages you are deriving your conclusion from.
I don't follow what you're trying to say. Are you talking about the author of the book? He's called an "Imperial scholar." It doesn't matter what race he is. He/ she obviously is representing the empire's interests, particularly in the last paragraph that directly addresses the Thalmor with a milk-drinking apology on behalf of the empire.
You mention stormcloak supporters, then conclude "that is the nature of racism." If that is not what you meant, your wording is extremely poor.
It's meant to show your own rhetoric in different context.
"Obviously" is not just your bias is it?
The necessity of the "White-Gold Concordat" is still up for debate last I heard.

Correction -> stormcloak supporters;
visa versa; expanding to the nature of racism, where people are "Obviously" what your preconceived conclusions are.
I'm just not going to take full responsibility for poor wording if you can selectively ignore words altogether.