But as you continue to omit, it's the evil one trying to gain power by the drinking of the blood. It is clearly presented as evil in both the book and the movie.
And in that great work of children's film-making, The Texas Chainsaw Massacre, it's the evil one who's chopping people up.
The point is, young children are being exposed and desensitized to obscene violence and horrific occult practices.
Can't wait for book 5.