Two teenage plaintiffs who allege that social media platforms caused them to develop serious mental health problems are taking Meta Platforms and Snap to trial in Los Angeles on Wednesday, in the latest legal test of claims that have been raised in thousands of lawsuits across the United States over social media’s impact on young people. The case is only the second involving individual plaintiffs to reach trial on allegations that social media companies deliberately designed their platforms to be addictive, and it follows a March verdict in which a jury awarded six million dollars in damages in the first such case, a result that has given added weight to the claims now moving through the courts. That earlier outcome matters enormously here, not because it binds the Los Angeles jury in any formal sense, but because it demonstrates that the addiction theory can survive the gauntlet of a trial and persuade ordinary people sitting in a jury box. Plaintiffs’ lawyers across the country have been waiting for exactly that signal.
The plaintiffs, identified in court papers as S.J., a sixteen-year-old girl from Illinois, and K.D.B., an eighteen-year-old woman from Mississippi, have said they began using YouTube as early as age three or four and took up other platforms around age nine. They allege that features such as autoplay and infinite scroll drove them into compulsive use, and that they developed depression, anxiety and eating disorders as a result. Their accounts echo the central theory running through much of the litigation against the industry, which holds that engagement-maximizing design choices, rather than content alone, are the mechanism of harm. That distinction has been crucial to the plaintiffs’ bar, because it shifts the argument away from the protected status of user speech and toward product design, a framing that courts have so far been willing to entertain. If the harm flows from how a feed is built rather than what appears in it, the traditional defenses built around the First Amendment become far less useful to the companies.
The trial opens with jury selection on Wednesday and is expected to run for several weeks. Meta chief executive Mark Zuckerberg, Instagram head Adam Mosseri and Snap chief executive Evan Spiegel are all expected to testify, an unusual level of executive involvement that reflects how seriously the companies are treating the proceedings. Meta and Snap are the remaining defendants in the case, meaning the verdict will be shaped by how a jury weighs the conduct of two platforms with very different product histories, Instagram’s photo and video ecosystem on one side and Snapchat’s ephemeral messaging on the other. Having two defendants in a single trial also creates a strategic dynamic worth watching, since each company will have an incentive to distinguish its own design practices from the other’s, and juries sometimes struggle to disentangle the conduct of multiple corporate defendants when the alleged harm is cumulative.
For Meta, the trial arrives at a moment when the company is already confronting a growing docket of youth-related litigation, and a second loss on the addiction theory would strengthen the hand of plaintiffs in the many cases still pending. The company has faced years of scrutiny over internal research on teenage wellbeing, and the discovery process in these cases has already surfaced documents that plaintiffs intend to use to argue that executives understood the risks long before they acted. For Snap, the exposure is narrower in scale but no less significant in principle, since the company has long positioned itself as a platform built for close friends rather than public broadcasting, a distinction its lawyers are likely to press. Both companies have consistently disputed the claim that their designs were intended to create dependence, and both have pointed to parental controls and wellbeing tools introduced in recent years as evidence of good-faith engagement with the concerns raised. Whether a jury treats those tools as genuine remediation or as after-the-fact hedging is one of the quiet questions that will shape the verdict.
Watching this litigation unfold, it is hard not to notice how much of the argument comes down to intent versus effect. The companies say they never set out to harm anyone and have built safeguards in response to legitimate concerns. The plaintiffs say intent is beside the point when a product is engineered to hold attention and the predictable consequence is harm to developing brains. Both positions have internal logic, and juries in different courtrooms may well land in different places, which is precisely why the early trials carry outsized importance as bellwethers for settlement negotiations and for how the remaining cases are litigated.
What the Los Angeles trial will not resolve is the broader question of how liability should be allocated across an industry whose products are used by the vast majority of American teenagers. The first verdict in March established that a jury can be persuaded to assign damages, but one result in one courtroom is a long way from a settled legal standard. The weeks ahead will turn on granular questions of internal documents, design decisions and expert testimony, and the testimony of three of the industry’s most recognizable executives will give the jury a rare opportunity to hear directly from the people who shaped these products. Zuckerberg in particular has spent years answering for his platforms in public settings, and his deposition and courtroom demeanor will be scrutinized as closely as anything he says. Whether that testimony persuades or backfires is impossible to predict, and the honest answer to what comes next is that the case will be watched closely by every company with a feed, a notification system and a teenage user base, because the outcome will help define what the law expects of design choices that keep people scrolling.
