the jury heard about this fake suicide note that was actually written by the serial killer, and we are told they would be looking at the competence and adequacy of the metropolitan police investigations. daniel sandford, bbc news, barking. a former facebook employee turned whistleblower has told a us senate committee that she believes the company's products have harmed children, stoked division and weakened democracy. frances haugen told lawmakers the social media giant knew its apps were harming the mental health of some young users. facebook said the company sees protecting its community as more important than maximising profits. 0ur correspondentjames clayton has this report. eleanor and freya are both 14 and like many teenagers they are both on instagram. as a teenager, you're looking at these people, all these models, and influencers, they all are very skinny