There are vampires?

Personally I do not believe in vampires, nor know someone who knows. I speak of vampire who sucks blood, which can live "a thousand years", which prevents the light of day and so on. Anyway, the vampires of film and tv that both delight the youngsters. A good example is the film "Lincoln - Vampire Hunter", a metaphor evident to label escravocatas who stole the blood and ... the work of blacks. However, consider the "vampires" as a good metaphor about the spirits of deceased people, which still roam among the living to harass certain people vulnerable. To these call "psychic vampires" that are denominated in spiritism obsessing.
And what they have in common obessores spirits or psychic vampires, the vampires that suck blood from film and TV?
Have in common the fact that they always suck vital energies of the people. What if the vampires of the screens is the blood and vampires or spiritual obessores is the subtle energy of the aura and ectoplasm. In any case it always causes inconvenience to persons or vampirized obssediadas. So I am researching the subject thoroughly to write a book about the "Spiritual Vampires", the intention of the people to know this matter and protect themselves from their assaults, for they are among us. A fact that I could experience in my life psychic.