Everyone is already familiar with fake news.
The Gulf of Tonkin incident, Iraqi weapons of mass destruction, virtually every Russiagate story, etc.
Those are easy and obvious. But most propaganda involves what isn't said.
For example, let's look at today's headlines.

The worst part about being lied to is knowing you weren't worth the truth.

(attributed to Jean-Paul Sarte among others)

I suppose I could have started this essay without this quote, but in light of the last thirty years, it encapsulates in one sentence just how little the ruling elites across the globe respect the human beings over which they hold power, and whom they exploit with such cruel efficiency. For deceit lies at the heart of what is wrong with our world. A liar passes judgment on each person to whom his or her lie is addressed; i.e., that such people are inferior creatures not worth telling the truth. And a steady stream of lies are what we are witnessing on a daily basis this year.