Here's a profound quote by the chess-master-turned-activist Garry Kasparov:
The point of modern propaganda isn't only to misinform or push an agenda. It is to exhaust your critical thinking, to annihilate truth.
He spoke with Sam Harris some months ago about The Putin Question, as Harris called it. He's a worthy follow and an interesting guy.
Are we being worn down by propaganda? Trump sure seems to tell us to watch Fox News often, afterall.