This subject is written badly more often than almost any other in comparative religion, and the failures are predictable enough to name.
The first is treating it as folklore. An article that files present-day killings under traditional beliefs, beside harvest customs, has already decided that the dead are ethnographic material rather than people with a claim on the reader. The second is treating it as a survival, the last embers of something Europe went through and outgrew. It is not a survival; it is contemporary, with contemporary causes including urban poverty, displacement, conflict, weak policing and, in several documented cases, the commercial incentives of preachers who charge for deliverance. The third is exoticism, which supplies the lurid detail and omits the court records, the national commissions, the local campaigners and the domestic legislation, and so presents whole societies as helpless in a way they are not.
The fourth failure is the one this atlas has to watch in itself. Because it also holds modern Pagan witchcraft, there is a standing temptation to link the two. They must not be linked. Almost nobody killed as a witch today is a practitioner of anything, exactly as almost nobody executed in Europe was, and treating an accusation as evidence about the accused is the error that killed them.
Name the accusation, name who made it, name what was done, and cite the body that recorded it.