What will happen is that the ‘right’ or ‘wrong’ person depending upon your political persuasion is going to be harmed either personally or to beloved family. He/she will have PTSD and probably have a spec-ops background.
And he/she will apply all they have learned to the problem and holy hell will start to rain down on a certain segment of the population.
And as a disclaimer let me say that I got that from looking into my crystal ball.
Your conjecture makes a lot of sense. That kind of professional risk taker, doesn’t just forget everything they know, once they leave that job, or become too old to case the bad guys. For many people, their first identity is that “I am a person who is loved and needed by (X) fill in the blank. For many, the fact that someone needs them, makes life worth livng. Such a relation of a Knockout victim will do whatever it takes to protect that source of affection, that who adds a priceless warm glow of acceptance into their lives.
I enjoyed seeing that knock out POS get kicked in the head by that white guy, but as a whole, not much will ever be done about it, other than one or two here and there. There certainly will never be any organized push back. The government will never allow whitey to fight back, not now, not ever. Get used to it. It will get worse, before it gets better. I wish I could be more positive, but I can't.