05:06Newsday06/10/2021 04:06 GMT : Facebook under fire in US hearingBBC World Service Duration: 50 minutes Wed 6th Oct 2021, 05:06 on BBC World Service News InternetAvailable for over a yearListen nowFacebook whistleblower Frances Haugen gives evidence to US lawmakers. Show more GenresNewsFormatsMagazines & ReviewsBrandNewsday Source: BBC Online