Twitter employees had always imagined the platform would be used for social good. Their idea was that free expression on the internet would lead to good things. But after the 2016 U.S. election, that notion would be put under stress. And Twitter would have to grapple with the question: what happens when its powerful superuser - who also happens to be the most powerful person in the world - creates havoc on the platform?

• Hosted by Peter Kafka (@pkafka)
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