Every Thalmor I've ever met was a cunt. Khajit made it a point to kill them. My Argonian kissed the ring because that was expected of him, but seriously, in Skyrim context at least, the Thalmor represent the worst of both worlds. They look down on everybody and they exercise Spanish-Inquisition-esque authority on whoever they damn well please. 

A lot of that is probably a product of the job -- you wouldn't send your cute, artistic lady elves to ensure military compliance. Still though. I can't even look at one without wanting to stab it.