The new season begins with a short message explaining that, while production on Stranger Things 4 wrapped in 2021, viewers may be disturbed by the parallels between scenes from the first episode and the real-world Texas school shooting that killed two teachers and 19 students. Netflix had previously uploaded the scenes in question to YouTube as a teaser in the days leading up to Stranger Things season 4 premiere, but the video has since been removed. Netflix’s content warning, shown below, appears when you play the season 4 premiere, and it appears that the message appears only the first time you press play.
