Obviously, the buring of witches at Salem, Massachusetts in early American History is something associated with witchcraft.
In terms of the modern craze for witchcraft, the movie by Kim Novak with Jimmy Stewart (Bell Book and Candle) is one of the first POSITIVE portrayals of witchcraft as a good thing (and not evil).
Then came the long running TV Series with Elizabeth Montgomery (Bewitched).
But the real problem with Harry Potter is that it is a significant craze among very young people and a rotten influence in this day and age on young people.
In terms of the Bible and Jesus (and the Catholic Church), Jesus said that it is better to put a millstone about your neck and be thrown into the sea than to corrupt the innocence of children.
Harry Potter is one of them -- as it makes witchcraft look like a good thing...
My belief in the evil of witchcraft is documented by the book: Possessed: The True Story of an Exorcism
The book explains that the boy gets demonically possessed because he started using one of those INNOCENT (/sarcasm off) OUJI Boards.
The boy had recently lost a beloved aunt, and he tried to connect his dead aunt via the OUJI Board.
Apparently, he dialed the wrong number.
The story of what happened to the boy was the basis of the novel and then the book The Exorcist. A young student at Georgetown University read about the story in the Wastington Post (or other Washington newspaper of the time) and was inspired to do the novel.
He changed from the story from the true story (a boy in the Maryland suburbs of Washington, DC) to a girl in the city of Washington, DC.
Also, be warned, this is a Catholic Caucus thread...
Possessed: The True Story of an Exorcism
By Allen B. Thomas
ISBN 038542034X
Publisher Doubleday
Year published 1993
(This book is available to be purchased through various sites as a new book or a used book.)
Reading this book should show the danger of fads like Harry Potter and the such...