The Wicca Rede:
If it harm none, do as you will.
All Witches must follow this simple rule but why do some own Books on black magick and the dark arts?
I have seen a few witch shops that sold some books on destruction, black magic and dark powers that had its own section.
I have also seen good witches owning web pages, books, and courses on black magick.
Why use black magick?