[Reuzel]

Snowden's data, however, does not describe a troll-farm to influence public political opinion in another country, like, say, Russia did when promoting Brexit on the English internet.

It is very likely they do this though. But they seem to focus on amplifying truths and correcting the record. PR opinion on Uyghur concentration camps has exploded, just order Reddit frontpage by most popular posts. Does not look entirely natural. But those concentration camps likely do exist, the media without access to intelligence agencies just was not writing about them.

And of course, the US being an exporter of culture, European countries follow suit. Nasty, when the views exported are the result of an information-warfare attack.