Why Lable Demons?

I am going to propose a question that I have challenged another group with. If you are accurate with your answer, you are well on your way to better understanding infinity:

The question: Instead of placing the lable "Demon" on a dark entity (there are no demons), ask yourself this; why is it that so-called demons are so very angry at Humanity?

Good luck, the challenge has now been placed before you.