The convergence of nationwide protests over police violence and a global pandemic have placed renewed scrutiny on the role of companies like Facebook, Google, Amazon and Apple in our democracy. On Wednesday, chief executives from those companies will face lawmakers — virtually — for a much-anticipated hearing on their power and influence in this election year. We had New Yorker staff writer Andrew Marantz on the show to talk about it. He covers tech and social media for the magazine, and he wrote the book “Antisocial: Online Extremists, Techno-Utopians, and the Hijacking of the American Conversation.”