I'm indifferent about this woman, and about her pal who came up with a story that some power abusers have copied whatever techniques they think will work. It wouldn't be particularly astonishing, would it? Could it just be factual that one set of ( presumably uniformed ?)people (I never heard of them so don't know if they exist or what is their task) have developed some basic part of this technique, which they might use in strictly disciplined and limited circumstances.? If not taken to extreme, and if not used unless essential, possibly it could be legitimate and useful in their responses to certain situations? Obviously it looks pretty effective, (like tasers,) as a way to deal with violent resistance to arrest, but only for a few seconds, not as a means of murder. (And not, as in that instance, when the suspect was not resisting arrest. No quelling, by any method, was required or justifiable). It would be like tasers. In very rare circumstances they might be called for, but as soon as a power abuser gets power, it needs close monitoring to ensure it is not used unreasonably. One retired u.k. policeman remarks that he wouldn't leave some of his ex colleagues unsupervised with a stapler!
People have pointed out that a major, problematic, big power abuse in America is that of the police unions, who in some U.S.A States will invariably defend the indefensible. I noticed an old man knocked out, blood coming from his head, another man, shuffling along with a walking stick and attacked by police knocking him down, a couple of girls walking along a 'sidewalk', rushed from behind and, again, knocked down. These were white people attacked by white police. I don't believe I was watching racism. What I was seeing was power abusers abusing power. They might very well have been racists, as well as power abusers, or paedophiles, as well, or wife beaters, as well, or antisocial neighbours, as well, but I would be surprised if they feared ever being made to account for anything they do, because they enjoy the arrogant confidence of bullies who feel certain they are immune from rules, and above laws.