Public figures who traffic in lies claim they're practicing free speech, but what they're really doing is putting us all at risk. It’s time for social media giants like Twitter and Facebook to ban them.
Conspiracy theories, which often espouse hateful paranoia about race and politics, are easily debunked but all too easily disseminated. And that's exactly the point.
And now they're poised to do it again. A journalist reflects on the dangerous disinformation of wartime reporting, and the threat of history repeating itself.