Free Speech vs. Disinformation Comes to a Head

In July 2021, as Covid-19 cases began to surge again, the surgeon general warned that misinformation had led to “avoidable illnesses and death” and urged the nation’s social media giants to do more to fight the sources of it.

“We’re asking them to operate with greater transparency and accountability,” the official, Dr. Vivek Murthy, said at the White House.

Facebook’s vice president of global affairs, Nick Clegg, responded days later, sounding aggrieved. “It’s not great to be accused of killing people,” Mr. Clegg testily wrote in a private text message to Dr....