BRIAN STELTER (HOST): Jeff, in six months, or almost six months into this presidency, how corrosive has this antimedia campaign been, do you think? 

JEFF GREENFIELD: I think the singular political success of President Trump, going all the way back to his campaign, is that he has convinced the core of his supporters that anything you hear critical of the president is by definition fake. And so I think that has served, that relentless campaign on Twitter and in his comments, fake news, fake news, fake news, has been to convince that group of people that there is no such thing as a set of facts independent of your politics. If you are criticizing Donald Trump, if you're pointing out inconsistencies or outright falsehoods, by definition you are lying. And that has certainly served to continue and accelerate what you've talked about as a long process of declining trust in news. And by the way, it's not confined to the political right. A lot of people on the left think that the press is the hand maiden of corporate America, it was unfair to Bernie Sanders. But in terms of the president, that is a key to the fact that even though he's unpopular on a national level, very low approval numbers, something like 96 percent of his voters told a survey they would vote for him again. And that, I think, is not an accident. This is not independent of a very shrewdly calculated political judgment. If I can convince my supporters not to believe anything they hear about me that's critical, I'm in relatively good shape. 

Previously:

How Trump's White House Is Delegitimizing Anything That Could Get In The Way Of Its Propaganda

Fox News Laments That Trump Gets "Some Fake News” From His Staffers. The “Fake News” Came From A Former Fox Analyst.

In 100 Days, Trump Has Attacked The Press Over 100 Times. Here’s How Fox News Cheered Him On.