Propaganda is usually truthful or exaggerated truth. It's the framing that is important. Some facts are focused on. Some facts are omitted.
I acknowledge that Russia, China and the DPRK have made mistakes and even done things that are deeply questionable. But I'm interested in comparing their mistakes or misguided actions to those of the most powerful military empire on earth. The one involved in hundreds of military actions and dozens of coups since its inception. The one with the largest per capita prison population on earth. The one which controls many of the world's financial levers.
There is a difference in the scale of their mistakes or bad actions. Propaganda distorts that difference of scale. It focuses on the crimes of the "enemies" / "axis of evil" / "rogue states" but doesn't examine context or culpability of the empire. They'll choose one conflict, downplay 9 others, and give a one-sided view of that one conflict.
That's how propaganda works. Every state produces propaganda. One state produces billions of dollars of propaganda each year.
Ooh, pool depth diss!