So I was randomly watching a show on Investigation Discovery today - the show was called Killer Next Door, and the episode was called Murder Without Motive.
The show is a French-Canadian program that has been translated into English, and this particular episode had to do with a homicide that took place in Ste-Croix-de-Lotbinière, near Quebec City, in November 1999 of a young man named Victor Lemay.
The confessed murderer was his friend, André Roy, then aged 22.
In the year or so that preceded the murder, André Roy had been disfellowshipped from the JWs and had, as a result, been kicked out of his parents' home. He had no social support outside of the JWs and had to start making new friends. The psychologists on the program felt very strongly that the shunning he experienced by the JWs in general, and his family in particular, contributed to increasing rage, and that his friend, Victor, became a convenient outlet for his rage. André Roy's girlfriend testified that he wanted his father blamed for the crime.
Although it's uncommon for Disfellowshipped™ individuals to go to such extremes as a result of shunning, we have seen enough murders committed and suicides to make a compelling case that the practice of Disfellowshipping™ and consequent shunning are harmful and sometimes dangerous practices.