"This weekend, former New York Mayor Rudy Giuliani told Fox News Sunday viewers that Hillary Clinton was seriously ill. The media, he said, “fails to point out several signs of illness by her. … Go online. Search for ‘Hillary Clinton illness.’ Take a look at those videos for yourself.”
The idea that Clinton is secretly wrestling with some unknown illness is just the latest conspiracy theory to go mainstream in an election season chock full of them. Conspiracy theories, which I’ve studied for the past seven years, have always been part of American politics, but they’ve tended to pop up in the dark corners of our political discourse, serving mainly as sideshows to more important political disputes. Not so this year; I’ve never seen a time when they so dominated the mainstream debate—and when they had the potential to do so much harm."