Antitrust needs an overhaul. So cry neo-Brandeisians, who urge a crackdown on industrial concentration. To the alarm of mainstream antitrust thinkers, the critics have found traction. Hostility to modern competition policy, however, did not arise in a vacuum. This polarized era has seen political upheaval, a populist revival, and diminished faith in capitalism. Implicated in that phenomenon is a renewed focus on antitrust.