How do you define demon possession?

Shadow people, normal people going crazy and committing atrocious acts, when you feel a chill going up your spine, speaking in tongues, etc.

I think it's when your vibration reaches a low frequency due to negative thoughts. This paves the way for demons to inhabit your body until you are able to raise your vibration again. Things which lower your vibration include: excessive masturbation, watching violent horror movies, arguments, etc.

What do you guys think? I think this is a very important topic that is being brushed aside by the mainstream media because their masters are, after all, mind parasites who feed off our negative energy.