Fairies in the folklore were not nice creatures

Movies depict the fairy folk like some magical benevolent beings that want to help people and that do all things out of love, compassion and understanding.
Folk tales teach us that the portrayal from the movies can't be further from the truth.
Fairies are vile, evil creatures, that torment people, steal children and cause madness.
A single fairy can abuse and harass an entire community of humans for centuries before being banished.
Fairies are said to have the entire slew of superpowers, so to banish them can be a pain.