On a Tuesday morning in late 2024, four state attorneys general walked into court with a single, pointed accusation: that the company behind Facebook and Instagram had knowingly built its products to exploit the developing minds of children. The states — filing their lawsuits separately but in coordinated fashion — argue that Meta did not stumble into a youth mental-health crisis; it engineered one. At the centre of the legal complaints is the claim that Meta's platforms were designed with deliberate features — algorithmic recommendation loops, infinite scroll, and notification systems — that are specifically effective at capturing and holding the attention of adolescents. Crucially, the states allege that internal company research had already identified these harms, yet executives chose not to disclose the findings to the public, to regulators, or to parents.

That decision, the attorneys general contend, amounts to a deceptive and unfair business practice under consumer protection law. Meta has consistently maintained that it offers robust parental controls and has invested heavily in safety features for younger users. The company is expected to challenge the legal standing of the suits and to dispute the causal link between platform use and measurable mental health decline — a connection that researchers across Europe, North America, and Australia have debated with considerable intensity for the better part of a decade. What makes this wave of litigation structurally different from earlier regulatory skirmishes is its explicit focus on design intent rather than content moderation.

The states are not asking Meta to remove harmful posts; they are arguing that the architecture of the product is itself the harm.