Just as Trump's catch phrase of "fake news" seems to have permeated and influenced everyone, we need to phrase we can use to mock and draw attention to one-way

Just as Trump's catch phrase of "fake news" seems to have permeated and influenced everyone, we need to phrase we can use to mock and draw attention to one-way communicators. Those who, as you say, never engage with opposing views. The term "fake news" didn't cause the creation of fake-news, nor the distrust in media, those things were always there, but "fake news" put an important label on them. That's powerful. So what label can we stick on those who wont communicate? Who wont allow their views to be challenged?