What is the practical difference between propaganda from the inside and that from the outside? Internal propaganda is often much more dangerous than external propaganda because it has a patina of legitimacy. President Trump, as you may recall, gave Rush Limbaugh a Presidential Medal of Freedom for, among other things, legitimizing the racism and sexism and a fairy-tale version of America that eventually set the stage for his election.
I'd contend we should worry a lot less about what others are saying than what we are saying to each other. Yet it still doesn't mean we should censor speech.
> Very little is more existential to even the idea of a nation than the national identity, the in-group, out-group, etc. and that is what it is used for.
Who is the in-group? Who is the out-group? Who shouldn't be in? Are you sure they're not in already? Should a nation evolve or be the same as when they were founded? What evolution is ok? What's not ok?