The death of Alexey Navalny, Putin’s most vocal critic

Officials said Russian opposition leader Alexey Navalny collapsed and died Friday inside a high-security penal colony above the Arctic Circle, where he’d been serving a 19-year sentence for “extremism.” Correspondent Seth Doane reports on the life of a fierce crusader against corruption who’d staged massive protests against President Vladimir Putin, and who’d already survived notorious attempts to silence him.