Tech heads testify on misinformation in the aftermath of Jan. 6 riots

Three top executives from big tech are back in the hot seat on Capitol Hill as lawmakers look to find solutions for misinformation, disinformation and how it spreads. But this time, Mark Zuckerberg of Facebook, Sundar Pichai of Alphabet, and Jack Dorsey of Twitter face questions about their companies' own responsibility in the January 6 riot at the Capitol. William Brangham reports. Stream your PBS favorites with the PBS app: https://to.pbs.org/2Jb8twG Find more from PBS NewsHour at https://www.pbs.org/newshour Subscribe to our YouTube channel: https://bit.ly/2HfsCD6 Follow us: Facebook: http://www.pbs.org/newshour Twitter:   / newshour   Instagram:   / newshour   Subscribe: PBS NewsHour podcasts: https://www.pbs.org/newshour/podcasts Newsletters: https://www.pbs.org/newshour/subscribe