How extremism came to thrive on YouTube

A system built to attract the maximum amount of user attention succeeds beyond all expectation, only to wind up promoting dangerous misinformation and hate speech around the world. It’s a story we have considered often in the context of Facebook, which has responded to the criticism with a promise to change the very nature of the company. And it’s a story we have not discussed nearly enough in the context of YouTube, which has promoted a similarly disturbing network of extremists an