Propaganda is not dependent on the speaker. If you look at historic propaganda of the german third reich, it's still propaganda, despite it possibly being a digital copy in a school book.
Propaganda is information or media that is purposefully designed to mislead, misinform or misdirect the reader and/or cause them to spread it to more readers, willfully.
When Bernays brought the propaganda techniques of Hitler into the world of US commerce, he invented the term "public relations" to avoid the negative associations with Nazi Germany.
Nitpick: it was the Nazi's who adopted Bernays' work, and not the other way around -
>According to Bernays’ own account he was informed by Karl von Wiegand, foreign correspondent of the Hearst newspapers, that in 1933 Goebbels was using his PR classic Crystallizing Public Opinion ‘as a basis for his destructive campaign against the Jews of Germany’.
Not all propaganda is misleading though; have a browse of https://www.reddit.com/r/PropagandaPosters/, you'll see anti-war/racism/capitalism posters, PSAs, etc. Your definition is too narrow (it's almost like it's propaganda against propaganda, very meta).
The ones I've seen are often one political ideology being positioned against another.
> "Propaganda consists of the planned use of any form of public or mass-produced communication designed to affect the minds and emotions of a given group for a specific public purpose, whether military, economic, or political."
>you'll see anti-war/racism/capitalism posters, PSAs, etc.
Just because you like the misleading message, does not make it less misleading.
Just because you are anti something that you consider bad, does not make you good, and more important than that, does not make you better than what you denounce.
Hitler was anti-comunist and Stalin anti-fascism. They used the anti "something horrible" as an excuse to grab all power without supervision.
I collect propaganda posters, and have lots of Russian communist ones. I study those. Communist has always been experts on propaganda and giving misleading messages.
Propaganda is information or media that is purposefully designed to mislead, misinform or misdirect the reader and/or cause them to spread it to more readers, willfully.