I'm not saying they all are. but Ambarys is.
Yeah, he might be. But the tread title says "Dunmer
are" and the guards were accusing Suvaris Athenor for being a spy, while she most probably isn't. So even if there is a Dunmer spy - or several - in Windhelm, it still doesn't justify the guards' attitude. I'm pretty sure there are just as many Nords who sympathize with the Empire in Windhelm as there are Dunmer.
I actually thought that book glorified the dunmer. It shows how they are standing up to the oppression that is the stormcloaks, who in turn think they are being oppressed. Just goes to show who's really being oppressed.
The author of the book is very radical and believes Dunmer are a superior race. He calls Nords apes and cowards and compares them to cows - doesn't seem like a very likeable fellow to me... You're right, he glorifies the Dunmer, but the impression he makes on me, the reader, is extremely negative. People like him are the reason Nords fear and hate the Dunmer. That's what I meant by my first post.
Woah, woah... hold on!
The Nords have accepted the Dunmer refugees and in turn the Dunmers want to kill them and/or drive them out of their homeland? Say what?
I always held a grudge against Ulfric for treating the minority (Dunmers, Argonians and Khajits) like dirt but this puts the dark elves into a new light.
See how easy it is to influence someone?

The book was written by one Dunmer. One. He presented his own point of view, nobody else's; he doesn't speak for all the elves. However, you are right in saying it puts Dunmer in a new light - most of the time the game leads us to believe Windhelm citizens are racist and other races just want to live peacefully. Nords are the bad guys, Dunmer/Khajiit/Argonians are the good ones. Obviously, this is just one side of the coin.
Some of those who migrated to Skyrim retained the need for supremacy; they were always a little isolationist, but just look at the Telvanni - they thought themselves better not only than other races, but also other Dunmeri Great Houses. The House might have fallen, but its ideals remain. Not every Dunmer is happy living on borrowed land, at Nords' mercy.
Then again, not every Dunmer dislikes the Nords. Some are fighting and dying for Skyrim. Some are doing their best to break the stereotypes Nords have about dark elves.
Athal Sarys on one side, Belyn Hlaalu on the other.