Your view of Harry Potter is fatuous nonsense. I don't know for certain how you arrived at such an ill-informed position, but clearly not from the actual evidence. (You admit to having seen only brief scenes, for which you have zero context, and seemingly you have read absolutely nothing of the books themselves.)
My involvement with the occult was strictly limited to extensive reading of occult literature, lengthy conversations over a six year period with a practicing medium and experiments with clairvoyance, ouija board, etc. However, none of that was relevant to my judgement on your HP views. See below:
And there you have it. The occult in the UK is a mix of con-artists, fairground attractions and sad, deluded, lower-middle class non-entities who think they have some supernatural gift. Clairvoyance, communicating with spirits and the like is nonsense. That you seem to think it has something of real (evil) substance is full justificaiton for refuting your claims about Harry Potter.