After the 2016 elections, critics blamed Facebook for undermining American democracy. They believed that the app’s algorithmic News Feed pushed hyperpartisan content, outright fake news, and Russian-seeded disinformation to huge numbers of people. (The U.S. director of national intelligence agreed, and in January 2017 declassified a report that detailed Russia’s actions.) At first, the company’s executives dismissed these concerns—shortly after Donald Trump won the presidential election, Mark Zuckerberg said it was “pretty crazy” to think that fake news on Facebook had played a role—but they soon grew contrite. “Calling that…
