https://qz.com/1226995/at-south-by-southwest-keynote-london-mayor-sadiq-khan-criticizes-facebook-and-twitter-for-failing-to-fight-online-abuse/ >London mayor Sadiq Khan says tech companies should show a “stronger duty of care” to live up to their promise of providing places where people can connect, and where information is shared equitably. >According to excerpts of prepared remarks, Khan will excoriate platforms such as Facebook and Twitter for fueling societal divisions in today’s (March 12) keynote speech at the South by Southwest conference in Austin, Texas, joining a widening chorus of social media critics.