this may seem wildly off-topic but I saw a tv programme in uk a couple of days ago which has been so much on my mind since that I have decided to mention it here in case you werent yet aware of the situation.
Nigeria was a British dominion between 1901 and 1960 when it gained its independence. It has the largest population of all the African countries (140 millions).
The programme I saw also highlighted the fact that it is rich in oil which is being exploited by western countries and yet the people remain amongst the poorest in the world ('less than a dollar a day').
An Englishman who initially went out to work for one of the oil companies (probably Shell although this was not stated) was so horrified at the number of destitute children in the streets that he decided to do something about it.
It soon became clear to him that a large number of the children had been rejected by their families because they had been denounced (by so-called Christian pastors) as witches.
In the old tribal religions of Nigeria anything bad that happened was attributed to evil spirits which needed witch doctors etc to cast them out with spells etc.
The colonial rulers from the West (firstly the Portuguese, and then the British) brought Christianity into Nigeria as into other parts of their respective empires) presumably, initially at least, both Catholicism and Anglicanism).
When Nigeria became independent politically it must have been difficult for the churches to continue their work in the colonial way and have presumably handed over authority to the Nigerians themselves.
The Nigerians are intensely religious people. The programme stated that it has more churches per square mile than any other country in the world. Many independent churches have sprung up and it is these churches that have somehow mixed up Christian faith with the old tribal religions.
In the film there is a one distressing scene (among many) where a ranting pastor suddenly picks on a boy aged about 12 (many are much much younger) and tells him, quite out of the blue, that there is evil in him. The boy doesnt say a word as the pastor becomes more and more worked up and finally denounces him as a wizard who has been the cause of his grandmother's death etc etc . We don't find out what happens to this particular boy but many other victims are shown with the most appalling injuries - many inflicted by their own parents or by close relatives. These are clearly the lucky ones who have escaped with their lives.
What struck me most forcibly was the fact that, whereas there were isolated cases in the 20th century, the problem has only become endemic since the millennium.
If you have time I would be grateful if you could take a look at the link and spread the word about what is happening in some of the 'Christian' churches of Nigeria. Perhaps your own churches have foundations out there that can carry a little influence and help to educate.
http://www.steppingstonesnigeria.org/