But is this a new problem though? I think this exists with traditional media too. Good example are fake opinion letters.
The newspapers also didn't shy from making deals with parties participating in elections - e.g. we will print favourable articles about you if you do X, Y and Z once you win.
Yes, it is a new problem when you take into account scale, cost and targeting. Traditional media couldn't target audiences at the granularity Facebook can. And running propaganda via newspapers or TV channels was limited to national boundaries which is not the case with Facebook. One more aspect is cost - I don't have any data, but its possibly very cheap to distribute fake news or propaganda pieces with social media.
