A lot of disturbing images have come out of Afghanistan. Some taken by professional media, such as people flooding a runway at the airport in Kabul, and many others taken by citizens on their phones and posted to social media. The technological ability of everyday people to document what’s happening on the ground has changed radically from when the conflict began 20 years ago. Marketplace’s Meghan McCarty Carino speaks with Zeynep Tufekci, who studies the social impacts of technology at the University of North Carolina at Chapel Hill. She said that while citizen reporting from Afghanistan is all over the internet, some Afghan journalists and activists are trying to erase all traces of their digital histories.