Slobodan is being disingenuous, of course.
The progressive left has written millions of words of material representing many many hours of careful thought and research, and somewhat more hours of less careful thought and research, as he well knows. He may well have heard of Marx's books, of Piketty's book. He may be aware that Elizabeth Warren has a plan for every conceivable thing under the sun, the list goes on and on.
The right, of course, has their own collection of books.
Neither library matters a damn, because what matters is the posters, the catch phrases, the visual moments, and the right has been distinctly, consistently, better at this than the left. Triumph of the Will is a hell of a movie.
Both sides use rental crowds at political rallies, as well as planted provocateurs, question-askers, and protesters. The right does a better job with the signs, the "spontaneous" chants and thrown remarks, and so on. They're simply better at this kind of theater, because they know that it matters more than "Well, I have a plan for whatever the hell your issue is."
This is highly salient to a photography forum, by the way, because the basis of all of this is the visuals. It is all about constructing visuals, and contextualizing them, which is ultimately what photography is about.