How is not relaying all information different from selecting information to relat?
As to misrepresenting information, the same subset of information could be seen as fair by one group and misrepresentation by another group.
What matters is the purpose of the activity. If one consistently spreads selective information from which one stands to gain in terms of money or power, I’d say that’s a problem, whether you call it propaganda or not. On the other hand, other types of selective information we could call “propaganda” (e.g., anti-drug or pro-savings commercials) might actually be beneficial to the society.