There is a proverb- Give dog a bad name and kill it. In India, this has another version. If you want to finish a woman, just declare that she is a witch. RThen do anything to her. strip and kill her. This what happened in superfstition hit Assam.
http://www.firstpost.com/india/assam-horror-mob-strips-suspected-witch-then-beheads-her-2353602.html