As you’ve heard this week, a jury found former Minneapolis police officer Derek Chauvin guilty on all counts in the killing of George Floyd. The key to that case was the video taken by teenager Darnella Frazier with her smartphone. Molly speaks with Allissa Richardson, a professor of journalism at the University of Southern California. She’s the author of the book “Bearing Witness While Black: African Americans, Smartphones and the New Protest #Journalism.” And she argues that smartphones, in most people’s pockets, are a powerful tool for accountability.