Sayyma, I had an interesting discussion with a Hindu roomate last night here in Los Angeles. He practices Kirya Yoga. He said he believes in "Laws of the Divine". How GOD created this world was with a "THOUGHT" and thoughts are the most poweful thing in the world. If you think something to happen, it "WILL" happen. So, he practices Kirya Yoga to purfiy his soul, gain positve energies and keep away from evils. What he meant was that you cannot challenge LAWS OF THE DIVINE. Just like we do with NAMAZ, etc to purfiy ourselves. In every religion there are things for protection.
I stayed here with an American lady (Christian) who is a Harvard University School of Education graudate and working here at a top position in administration. She wears things for protection and says Black Magic, Voodoo, Evil Spirits all exist.
If you go to Wikipedia, search for Evil Eye or Black Magic and you will see people in every country in the world have someting for protection, like we use taweez or turkish use a thing called Nazar (search in google).
One can be a liar, two or three can be lairs.......millions who have fallen victims of Black Magic are NOT lairs.
Black Magic and Voodoo exist.......
Demonology is studied as as subject in American Universities.
Finally, it is also in QURAN.