Some input please.

So long as it was a smaller-scale hunt, there wouldn't be a problem with it. Like you said, witches are heavily persecuted, so for everyone to be just fine with it all the time probably wouldn't make much sense. However, a massive, and organized mob-type hunt most likely wouldn't occur in Germany, given that the last witch to be hunted was sentenced way back in 1775. India, Sub-Saharan Africa, Saudi Arabia, and Papua New Guinea are the only places I could find that still have these large-scale hunts, as their laws pretty much condemn anyone who practices or supposedly practices magic. Everywhere else, it seems to be just a social prejudice.

Hope that clears things up for you!

You could probably wing the black market idea, or do something similar to it. I don't think it would be too far outside the realm of possibility. People sell and buy strange stuff; a market for witches wouldn't seem too out of place compared to some things.