I'm realizing this. I'm not the Doctor. I can look the other way on a lot of this but I can't condone killing relatively innocent creatures. Damon hasn't killed anyone. He hasn't turned anyone. He's slipped seemlessly into society. So has the kitsune, so have the others. They shouldn't die just for what they are.
It might not be as easy as simply Dean Winchester. He was threatening to go to all of the Hunters in town. This is likely to lead to something bigger, Jack. If the creatures here are backed into a corner...