In the wake of the Uvalde mass shooting in Texas, the fourth and final season of Stranger Things has added a last-minute warning for US viewers.

"We filmed this season of Stranger Things a year ago,” the warning reads. “But given the recent tragic shooting at a school in Texas, viewers may find the opening scene of episode one distressing. We are deeply saddened by this unspeakable violence, and our hearts go out to every family mourning a loved one.”

The episode contains a telekinetic massacre involving children.

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