You see Drich, this is the problem with religious morality. You ask us if killing witches is always wrong, and tacitly (if not explicitly) defend that it is always right by saying there are bad witches. Contradicting yourself, I see.
And if you honestly believe in witches - that is, beings using magic, not simply followers of a particular religion (Wicca, usually) - then I'm concerned about your mental state. This isn't the 17th century.
And if you honestly believe in witches - that is, beings using magic, not simply followers of a particular religion (Wicca, usually) - then I'm concerned about your mental state. This isn't the 17th century.