Meet the activist who uncovered the Russian troll factory named in Mueller probe

Internet activist Lyudmila Savchuk.
Internet activist Lyudmila Savchuk spent two months working in a "troll factory" in St. Petersburg, Russia. She was tasked with writing posts that would inflame anti-American sentiment among Russians. Others at the factory would write negative posts about American politicians, the war in Ukraine and America's NATO allies.
Jolie Myers | NPR