Do white supremists float?

Not sure why you claim witches aren't real. I know plenty of witches. While they may not be green skinned and fly on broomsticks that melt in water, there are plenty of people that call themselves witches nevermind whatever characture you have in mind.

The "witches" people were afraid of during the witch-trials were accused of worshiping and consorting with the devil to cast harmful spells or undermine the Christian virtue of a community. Those witches were the product of mass hysteria and opportunistic hatred, and almost certainly never existed.