I don't know if I've ever shared this before, but it might go someway to answering your question.
I've been at varying states of awareness about the hidden war since the 90's, but not as a main preoccupation, back then I was mostly about self development etc.
Well, in the mid 2000's I was granted a vision, that's about the best I can describe it, but it came with conditions.
I was to be allowed to view the future, but afterwards I would not be able to remember the details. Sounds pointless then, yeah? Well, no, because I was allowed to remember how it felt. Indescribable joy, heaven on earth. That's what it felt like.
Then a couple of years ago I was just stepping in to my office outside and the exact same feeling washed over me, lasted about 3 seconds. Came out of nowhere and went back the same way, no idea what prompted it, but it renewed my confidence.
So, to answer your question: How will we know? The answer is that if what I felt was true and genuine (I know it is, but I hardly expect anyone else to) then you will know, because you will feel it in no uncertain terms. It is a life changing feeling and full of every good thing you ever have, or ever will, experience throughout your life all at once.
If it doesn't end up happening like that, I shall be having words, have no doubt!
My personal favourite quote is the one where they said they hid the nature of the jab so people wouldn't refuse to take it (experimental gene therapy).
At the time I researched the BioNTech patents and it said in the patent what it was, irrefutable evidence that people would ignore in favour of what some arsehole on TV said.
Video is too short, lots of quick clips - needs to be covered more extensively if they want people to accept these findings.