We throw the term "witch hunt" around pretty loosely, but when it comes to child abuse accusations, apparently it's more accurate than not, at least in one Canadian city, where school officials reported sexual abuse of one of their students on the basis of a psychic's suggestion. As Random Observations noted, the last time we accepted that kind of evidence in North America was during the Salem Witch Trials of 1692.
In this case, the child's mother was able to refute the accusation successfully, because the nature of her daughter's disability, combined with the fact that her elementary school had "lost" her several times, had prompted her to equip the girl with a GPS and a continuous audio monitor that provided clear evidence that the accusation was false. How many other parents could have proven their innocence so easily?
