Its reference to a parallel with history, nothing more.

Some history today isn't taught because its unpleasant, and occasionally people need to be reminded.

If you look closely and objectively and compare the public education system we have today in its current practical form, that survived from the 90s, to that of maoist reeducation camps in detail, you'll find almost the same structures present, and all of the functional elements are all present. Clustering of these elements in structure is occurring.

Phones ensure consistent exposure to those elements regardless of physical location. In aggregate these elements and structure form all that is needed for torture with respect to thought reform.

There was at one point a ban which was supposed to protect against the use of such elements back in the 70s, but as the FTC has weakened, and its ability to enforce has continued that trend unabated. We are seeing a progressive slow roll to maoism/communism/socialism, in our children, unnoticed.

The functional parts comes down to the nature of subliminal compulsion and persuasion, the fundamental limitations of our own metaperception that occur unconsciously.

Like for example, if I were to ask you a leading broad question that you'd have to agree to, and then asked a similar question you'd agree without question or thought, and even if you disagree with parts, this blindspot overrides your perception seeking consistency over time. I'll know you've softened up, and in conjunction with others repeating that a few times before you know it you'll have a change of heart and mind. There are many such ways to utilize blindspots we are never taught we have, and without knowledge of them we respond predictably following fixed action patterns that are not unique.

There is a very fine line between acceptable and unacceptable behavior with regards to these matters, and the lack of awareness only makes people more gullible and easily manipulated.

The enforcement mechanisms to prevent these uses in today's society simply do not, and in many respects as far as we know cannot exist within an open society. We value free speech, while not making the distinction between coerced belief and the right to not be bombarded by unwanted speech. Many of these things people have been purposefully misinformed about in a myriad of ways.

For example, Hollywood has worked very hard to condition the public by media so when you talk about subliminal advertising you think dramatic caricatures of something unrelated (going back to 60s experiments) with messaging that is easily contradicted and impossible, and in the process of agreeing with that sentiment you blind yourself to the nuanced reality.

What I am saying is, if it looks like a duck, it quacks like a duck, and it functions as any duck would. Then its probably a duck even if you call it something else. The name doesn't matter, a thing is what it primarily does.

In general, it seems there is a trend where people have not been informed or educated on these matters, let alone enough to recognize these dangers unless they go out of their way to seek the material out and learn which seem to be in the minority. If you ask the average person about brainwashing, and they'll think or say you are crazy, but if you ask them about specific instances of cults, or other material that cannot be refuted, and they'll say yeah that happened but still not believe it, despite objective proof.

If you yourself are unfamiliar with the realities of this subject matter. I'd highly suggest you take some time and do the research. There is nothing better than challenging yourself and any potentially limiting beliefs you knew to be true but ended up being false (through no fault of your own).

It takes a lot of character and strength to actually do this, and a miniscule few will ever read something they disagree with, but you have to do that if you want to prove that disagreement is correct and you are right. It requires discipline, and its often the only way to amply get the fodder you need to shut down conversations, where the person pushing false or misleading material doesn't know what they are talking about.

The following authors are well established. You can find many others but these are a good starting point. A college intro to communications course will also briefly touch on identity/psychological development of culture, and that is also a blindspot mechanism we all have though its very difficult to find material on it. Its called reflected appraisal, and distorted reflected appraisal is commonly used today following structure.

[1] Joost Meerloo on the Rape of the Mind
https://en.wikipedia.org/wiki/Joost_Meerloo
https://www.goodreads.com/author/show/5609700.Joost_A_M_Meer...

[2] Robert Lifton on Thought Reform
https://en.wikipedia.org/wiki/Robert_Jay_Lifton
https://www.goodreads.com/author/show/67376.Robert_Jay_Lifto...

[3] Robert Cialdini on Influence (the blindspots)
https://www.goodreads.com/author/show/160932.Robert_B_Cialdi...

[4] John Leach
https://pmc.ncbi.nlm.nih.gov/articles/PMC4890253/