Have you been ghosted? You are not alone. One of the most common and most insidious forms of bullying is the practice of shunning. By common agreement, a group of friends or colleagues elects to single out one person and pretend he or she no longer exists. The human race is a social group, and the tendencies toward tribalism are natural. But the results have an enormous psychological impact on the scorned individual. Shunning can lead to depression,...