Harry Potter teaches Sorcery aka magic and it is forbidden in the Bible for Jews and Christians. Hindu's can do whatever they wish.
Modern Witchcraft falls under idolatry and sorcery!
Strong's Number: 3095
Transliterated: mageia
Phonetic: mag-i'-ah
Text: from 3096; "magic": --sorcery.
Strong's Number: 3096
Transliterated: mageuo
Phonetic: mag-yoo'-o
Text: from 3097; to practice magic: --use sorcery.
Strong's Number: 3097
Transliterated: magos
Phonetic: mag'-os
Text: of foreign origin [7248]; a Magian, i.e. Oriental scientist; by implication a magician: --sorcerer, wise man.