Is killing a witch always a bad thing?

[Esquilax]

In short where does the modern sense of morality draw the line, or is their no line because the desire to be politically correct has one negate common sense/self defense because these people gather and worship under a P/C protected religion?

Baseless emotive language aside, I'd remind you that we already have laws in place for self defense, although they might run into trouble dealing with a witch since witchcraft doesn't exist, and it's for that reason that I hope to fuck this is just a hypothetical you're doing, and not something you think is likely to happen.