A previously unpublished internal document reveals Facebook, now known as Meta, knew Instagram was pushing girls to dangerous content.Other internal memos show Facebook employees raising concerns about company research that revealed Instagram made 1-in-3 teen girls feel worse about their bodies, and that teens who used the app felt higher rates of anxiety and depression.Attorney Matt Bergman started the Social Media Victims Law Center after reading the so-called "Facebook Papers," disclosed by whistleblower Frances Haugen last year.- Teen watched simulated hanging video on Instagram before suicide- More than 1,200 families suing social media companies over kids' mental health- Meet the teens lobbying to regulate social media- Resources for adolescent and family mental health supportBergman argues the apps were explicitly designed to evade parental authority and is calling for better age and identity verification protocols.Meta, the parent company of Facebook and Instagram, declined 60 Minutes' request for an interview, but its global head of safety Antigone Davis said, "we want teens to be safe online" and that Instagram doesn't "allow content promoting self-harm or eating disorders.""