Board Thread:Speculation House/@comment-4444715-20170323233523/@comment-3387274-20170329101644

Also of note, it's not entirely clear what Salem's relation to the Grimm is. She controls them, but some of her lines suggest she might be doing so through fear. Qrow basically admitted they don't have a clue about her beyond her wanting the relics, and dividing humanity. The latter coudl be just a very efficient and cunning way of bringing about destruction, but a lot of Salem's plan seems overengineered for just a way of killing all things.

Not to mention, as it was brought up elsewhere the Grimm are focussed on humanity, but the creation myth claims humans came after the Grimm did. It's apparent that something changed in the Grimm's motivation, and Ocham's razor suggests that that something would be Salem.