If you do understand First Amendment then you should also understand that foreign propaganda is protected speech, and is not treated as yelling fire in a crowded theater:
Correct, the mere act of spreading foreign propaganda, without more, is not illegal.
But spreading foreign propaganda is indeed illegal despite that precedent if one does it as an agent of a foreign government within the FARA legal definition (which is reasonably implied by being on their payroll) and does not register with the US government as a foreign agent, aside from certain exceptions.
That’s the scenario which started this subthread:
jkaplowitz|1 year ago
But spreading foreign propaganda is indeed illegal despite that precedent if one does it as an agent of a foreign government within the FARA legal definition (which is reasonably implied by being on their payroll) and does not register with the US government as a foreign agent, aside from certain exceptions.
That’s the scenario which started this subthread:
https://news.ycombinator.com/item?id=42430717