Watch Live: Facebook, Twitter and Google chiefs testify on extremism and misinformation

Lawmakers on Thursday are questioning Facebook's Mark Zuckerberg, Twitter's Jack Dorsey and Google's Sundar Pichai about the companies' role in promoting extremism and misinformation online. This will be the first time they testify before a congressional body since deadly riots at the U.S Capitol in January.   What: The Subcommittee on Communications and Technology and the Subcommittee on Consumer Protection and Commerce of the Committee on Energy and Commerce are holding a joint hearing titled, "Disinformation Nation: Social Media's Role in Promoting Extremism and Misinformation." Facebook chairman and CEO Mark Zuckerberg, Twitter CEO Jack Dorsey and Google CEO Sundar Pichai will testify.  Date: Thursday, March 25, 2021 Time: 12 p.m. ET Location: Virtual  Online stream: Live on CBSN in the player above and on your mobile or streaming device.

Zuckerberg is calling for changes to the part of the federal law that provides platforms immunity from being held responsible for content that others post on their sites.