Zuckerberg testifies in LA trial over teen-harm claims as plaintiffs seek to narrow Section 230 and hold platforms liable for addictive algorithms and design.

This case could have consequences not just for families and kids, but also for social media companies and how they might be required to do more gatekeeping.

The social media addiction trial resumes in Los Angeles as Mark Zuckerberg testifies for eight hours. Grieving mothers react, alleging platforms are intentionally addictive for children.