This article contains spoilers for Terrifier 3, V/H/S/Halloween, and It: Welcome to Derry.
Killing a child on screen used to be shocking. It took John Carpenter just over 30 minutes to kill a kid in his 1976 movie Assault on Precinct 13. A young girl, Kathy, wanders back to an ice cream truck, unaware that the vendor has been murdered, and is subsequently killed by one of the toughs.
However, this moment is eclipsed by the carnage in the premiere of the HBO Max series It: Welcome to Derry. In the final scene, the Eldritch terror hijacks a screening of The Music Man to attack a group of youngsters.
First, it takes the form of a kid It killed earlier to appear on screen and accuse his friends of failing him.
Author's summary: Horror movies now frequently feature child deaths on screen.