Ragnar did not let his emotions show on his face, but his mind was extremely turbulent. As a man who had dedicated his entire life to the human race, one of the things he hated most were demons, devils and other races that for some reason targeted the humans.
But the single thing, without a shred of doubt, that he hated most were humans who betrayed the human race. He understood that there was always conflict and interest, and humans could never completely be peaceful with one another. It was all but natural. Yet there was a difference between fighting other humans due to a conflict of interest, and betraying them to gain benefits from another race.
He knew, unfortunately, that as despicable a thing as this was, it was still prevalent in humans. He just never imagined that he would face it on such a high level.