Russia's opposition movement still exists — but it's 'rudderless'

Two years ago this week, Alexei Navalny died in a Russian penal colony in the Arctic. His Anti-Corruption Foundation once maintained a vast network of offices from Moscow to Siberia, aimed at exposing graft and supporting opposition politicians. That's all gone now. But many Russians who worked with Navalny are carrying on the work, from exile. Reporter Levi Bridges has our story.