To address the OP and this:
For the record, I think shunning is wrong except for cases when the person should probably be removed from society as a whole (making their shunning largely irrelevant) and it demonstrates that any group who does it fundamentally knows their beliefs are weak and cannot stand up to any questions.
Asked and answered. Even people who commit heinous crimes against humanity (eg, sociopaths who are obviously unhinged) have family members who accept their mental illness and still love them, may communicate with them either in person or through other means.
Shunning in the JW sense is more akin to (imo) the practice of making someone an outcast, and leaving them alone, in the wilderness, to fend for themselves, merely for disagreeing with the group-think.
So, on two points, I say the argument is moot, before it gets started, points being;
a) comparing people who are mentally deranged and need to be isolated for the safety of others, to 'innocents' who are outcast for no good reason, is 'apples and oranges'
b) even the above 'mentally deranged' usually have family that support and love them.
Succinct and to the point. Big scores in the TMS. Just kidding! It's only my 2 pence.
:P
tal (imagine smiley with sunglasses, I'm TTTC)