Facebook 'operating in the shadows' says whistleblower as U.S. lawmakers demand probes

Facebook whistleblower Frances Haugen is interviewed by Scott Pelley for a CBS News 60 Minutes program in an undated photograph. Robert Fortunato for CBS News/60MINUTES/Handout via REUTERS

WASHINGTON (Reuters) -U.S. lawmakers pounded Facebook on Tuesday, accusing CEO Mark Zuckerberg of pushing for higher profits while being cavalier about user safety, and they demanded regulators investigate whistleblower accusations that the social media company harms children's mental health and stokes divisions.

Zuckerberg, hours later in a public Facebook post, defended the company, saying the accusations were at odds with Facebook's goals.