In the weeks after the Jan. 6 insurrection, law enforcement agencies and internet sleuths identified hundreds of people who stormed the U.S. Capitol. Many were later arrested or faced consequences at their jobs or in their communities. Authorities used a variety of technologies to speed up that process, which was needed because there were millions of images, messages, social media posts and bits of location data to parse. Marketplace’s Kimberly Adams speaks with Anjana Susarla, professor of responsible artificial intelligence and information systems at Michigan State University.