Representatives from Facebook, Google, and Twitter are testifying before Congress this week about propaganda and misinformation on their networks. Russian operatives created fake accounts across the political divide: one called “Secured Borders,” raised concerns about illegal immigration, while another, called “Blacktivist,” called for more activism in the African-American community. Marketplace Tech host Molly Wood talks with Loyola communications and African-American studies professor Karsonya Wise Whitehead about whether these accounts were successful in exacerbating racial tensions in America.