Here's David McNally, talking about the ideas in his book Monsters of the Market: Zombies, Vampires and Global Capitalism, which I mentioned (and cribbed from shamelessly) in this recent post.
Here's Silvia Federici, talking about her book Caliban and the Witch, which links the witchhunt craze to the rise of capitalism.
And here's China Mieville, giving a Marxist view of Hallowe'en (which is more fun than it sounds).
Monsters of the world, unite!
I didn't know this, but there's a video of the China Mieville talk I linked to above: