Dementors are real, beleive it or not..... harry potter is based off of the spiritual world....
Dementors feed off fear.... as do all negative polarised things on this 3rd density plane.
They are a metaphor for malovent spirits, which are most definately real, and a part of you, me and EVERY form of life around you. As is divine essence...

Mediation and lucid dreaming are great tools for learning what i am trying to teach you.
many movies are based off of how reality REALLY works. The matrix, the wall, the truman show.... Many many movies trying to point out the truth. But there are also many movies which try and sway you from the truth.