Arturo Bejar, a former Meta engineering director, testified on August 19 as the first witness in a trial that began August 18 and is expected to last six weeks. The coalition of states including California, Colorado, Kentucky, and New Jersey accuses Meta of designing Facebook and Instagram to maximize engagement among young users, contributing to anxiety, depression, and suicide, while misleading the public on safety and improperly collecting data from children under 13. Mark Zuckerberg is expected to testify during the proceedings.