“For the previous 20 months, he’d been hemmed in by a campaign built on the principles of restraint and competence. The former president’s ugliest impulses were regularly curbed by his top advisers; his most obnoxious allies and most outlandish ideas were sidelined. These guardrails had produced a professional campaign—a campaign that was headed for victory. But now, like a predator toying with its wounded catch, Trump had become bored.”