Gonna have to explain more on why humans as a whole all of a sudden hate witches. One or two people is easy enough to swallow, and maybe a small group is reasonable enough. But for an entire population to turn on witches that have apparently been helping them the entire time makes little sense without some sort of major driving force. Whether or not I follow this or not will depend entirely on whether they explain this potential plot hole well enough, because hand waving isn't enough for me in this case.