Meta, TikTok, and YouTube face a landmark trial in Los Angeles, where they are accused of deliberately addicting children to their platforms. Jury selection began this week, with a central case from a 19-year-old plaintiff, “KGM,” who claims that social media exacerbated her depression. The lawsuit argues that design choices aimed to maximize youth engagement mirror tactics used in the tobacco industry. If successful, it could redefine the liability landscape for social media companies regarding youth mental health.