Based on the chatter in the corridors of political power and from elite intellectuals these days, one can’t help concluding that Twitter, Facebook and their social media cousins rank as the civilized world’s leading threats to democracy. The Information, a technology website, ponders “How to Curb Tech Executives’ Power.” Yaël Eisenstat, a former CIA officer, White House advisor, and overseer of election ads at Facebook, writes at Harvard Business Review about “How to Hold Social Media Accountable for Undermining Democracy.” Francis Fukuyama and two colleagues at Stanford in c...