Twitter, Facebook CEOs vow election action; GOP touts curbs

As the CEOs of Twitter and Facebook gave assurances of vigorous action against election disinformation, Republicans at a Senate hearing Tuesday pounded the social media companies over political bias, business practices and market dominance, laying the ground for curbs on their long-held legal protections.

Facebook bans Holocaust denial, distortion posts

Facebook says it is banning posts that deny or distort the Holocaust and will start directing people to authoritative sources if they search for information about the Nazi genocide.