Last Friday afternoon, just as President Joe Biden was boarding Marine One for a weekend at Camp David, a reporter yelled out a question: “On Covid misinformation, what is your message to platforms like Facebook?” Above the din of the helicopter, Biden responded with his quintessential frankness: “They’re killing people.” His comment didn’t come out of nowhere. Just the day before, the Surgeon General, in his first formal advisory of the Biden administration, issued a stark warnin