The totalitarian, dystopia part of HM is plausible -- the puritanical part - eh, not so much.
Writes a former member of a puritanical cult -- one of 8 million people that bought into just such a whacked belief system!
What the ... ???
A while back, I gave a presentation at an International Cultic Studies Association (ICSA) conference in Europe. My particular topic was recovery after leaving a cult. The audience consisted mostly of mental health professionals and cultic studies researchers from all over the world, but there were also a few former cult members and family members trying to figure out how to have an intervention on behalf of their loved ones. At any rate, most members weren't too familiar with JWs or their beliefs.
Midway through the presentation, one participant in the workshop asked if I thought JWs were capable of being radicalized (the presentation before mine was about how many, many teenagers in Spain were being recruited by extremist Islamic groups). I responded by saying that at present JWs were instructed to be non-political, however it was (and remains) my opinion that if the JW leadership ever directed their membership to carryout any kind of terrorist attacks that at least 1% of JWs worldwide would be totally and completely committed to doing whatever they were told. Blind, unquestioning obedience is a potentially scary thing - (see “Seven Shepherds, Eight Dukes—What They Mean for Us Today,” Watchtower, November 2013, paragraph 17).
I then continued, explaining that there are about 8 million JWs worldwide. Do the math. That means that about 80,000 individuals could and would be ready to do whatever they were told by WT leaders. Imagine: 80,000 coordinated acts of terrorism and or violence! (You may or many not agree, but the potential is certainly there.)
At this point in the presentation a young man in the audience raised his hand. (He was not the person that asked the initial question that got this part of the discussion going.)
When I called on him, he said boldly, "You're wrong!"
Taken somewhat aback, I said, "Okay. This is just my opinion, but tell me why you say that."
He replied, "I am very well acquainted with the beliefs and actions of Jehovah's Witnesses and I just think you're wrong. It wouldn't be 1% ... it would be much, much higher. Probably 10 - 20% or possibly even more!"
I found out later he had been a Bethelite for several years in Selters, Germany.
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Returning to the OP. I would think that we, as former cult members, would be the first to acknowledge how easily people can be manipulated and controlled into believing and then doing crazy, even horrible, things.
The Handmaid's Tale is clearly fiction. It is one woman's idea of how a dystopian, totalitarian society could possibly reform out of a post-enlightenment democratic one.
Clearly the story is compelling as evidenced by the lasting popularity of the book, the critical acclaim of the recent television adaptation and the fact that we are discussing it here.
Will it happen here? Probably not; I certainly hope not.
Could it happen here? Absolutely.
Therein lies the cautionary aspect of the tale.