It's a bit more than 'The persecution of our Sisters and Brothers' the situation is more to do with fear, superstition and manipulation of the populace for personal gain.
Men, Women and Children are branded as Witches are tortured and abused - killed even - in some cases of the 'Child Witches' it's more small religious groups preying on families to get money out of them or other payments. In a lot of cases after the 'Witch' has been exorcised - they are abandoned by their family.
Most people who are targets of these 'Witch Hunts' in Africa - have never been proven to be Witches at all, there is also practice of this in the England - closed Church groups spreading rumors of Witches amongst their congregation to either get more money from their flock or to keep them under heel.
As an example, if a young woman refused the courtship of a man, she could be branded a Witch, if a child was seen dancing around on their own - they could be seen as a Witch.
Look at the Documentary called Child Witches - it actually comes from the view point of a Survivor of one of these Witch Hunts who was essentially tortured as a young boy.
It's not Witches who are being killed - it is people, being violated, manipulated and killed by people.