Fear is what motivates you to act in self-preservation. Not always wisely or efficiently. That is it is purpose.
Fear of witches is different.
By going up and ringing the bell. By throwing rocks. By shouting and jeering.
Fear motivates you towards self-preservation.
Fear of witches motivates you towards... anything. Whatever you want to do anyway. Seize land, drive people out, get elected president, set people on fire. Whatever.
And, I mean, they do make themselves afraid, those who fear witches. But it's motivated reasoning, motivated feeling. They make themselves afraid to justify what they want to do anyway.
I can get a whole entire anxiety attack over that.