Have you included witch-hunts and violent mobs of torch and pitchfork bearing peasants in your games?
I can honestly say that I've never really had either occur in my games. This might be because my games tend to be more high fantasy, but I'm not sure.
I'm currently running Curst of Strahd, so I think this will change soon, but it was an interesting revelation.
Tell me about your heathen slayers, violent rabble, and inquisitions.
BTW, if you're using Swords and Wizardry (Complete) you should check out this free Witchfinder class created by +MonkeyBlood Design (Glynn Seal).