And mostly where the power structure of the church had broken down and the new protestant churches hadn't gained ascendancy much. The whole witch-burning-myth is part and parcel with a whole lot of other 19th century myths that have been accepted as truth, from primary school books up to university lecturers, but which aren't true. The kalevala, kilts, ravens at the tower, Columbus being persecuted by the inquisition and so on. "The Invention of Tradition" by Hobshawn and Ranger is a really interesting read.