Mainstream media lost its grip on propaganda and now they're trying to push for censorship of opposing views (this past election is the proof of that). Read this interview with the founder of Snopes for the background of this [0].
Never mind the fact that "real news" organizations have been caught lying so many times and have collaborated, behind the closed doors, with Hillary's campaign, for example. [1]
And they're also grouping WikiLeaks under the "fake news" category as well. I guess that's the punishment for exposing how corrupt the mainstream media really is.
[0] https://backchannel.com/according-to-snopes-fake-news-is-not...
[1] http://www.wnd.com/2016/11/meet-leftist-prof-who-wrote-hit-l...