Now that it is fashionable for aggrieved political factions to dismiss criticism as a “witch hunt”, it’s worth remembering what makes actual witch hunts so pernicious. It’s not that the women thus accused are in fact innocent – it’s that they couldn’t possibly be guilty. In northern Ghana, witch hunts are more than a political metaphor. Even now, vulnerable women are accused of the dark arts because they have a mental illness, a physical.