Exodus 22:18 Suffer not a witch to live.
Deuteronomy 18:10 There shall not be found among you any one that maketh his son or his daughter to pass through the fire, or that useth divination, or an observer of times, or an enchanter, or a witch.
Every day we hear how great those Harry Potter books are--So imaginative! So entertaining! And they're getting kids excited about reading--that's a wonderful thing, right? Yes, Satan can always package evil attractively.So it's no surprise who loves Harry Potter.
It is imperative that you shield your children from these books and movies in any way you can. Mark 9:47 teaches "And if thine eye offend thee, pluck it out: it is better for thee to enter into the kingdom of God with one eye, than having two eyes to be cast into hell fire." Hopefully it won't be necessary to gouge your children's eyes out, but should it come to that, remember that eternal damnation is infinitely worse than a few years of being called "Blinky" in school.