It's a good question, but I think there's a pretty clear distinction between propaganda and trolling that is not just intent but has to do with the 'spin' of th

It's a good question, but I think there's a pretty clear distinction between propaganda and trolling that is not just intent but has to do with the 'spin' of the information. The same vagaries that would allow the US to block a 'troll' from Russia - if they could not tell that it was propaganda - would cause them to block similar misgivings from the American population. This isn't the case. They can attribute propaganda to its progenitor. They use the label 'troll' and 'spam' for political reasons and reasons of civil affairs. However these terms are dishonest.