Many examples, I was kind of a little bitch as a kid.

There's this movie called Good Son. I don't remember the plot exactly, so I'll just go off my memory. It's about a little kid who moves in with his cousin(?) played by Macaulay Culkin, who acts like a sweet little angel when adults are around, but is an edgy little cunt when they look away. He swears, smokes, abuses animals, almost kills his little sister, and is generally an evil little bastard who gets progressively more evil as the film goes on. Naturally, no one believes the other boy when he tries telling them of Macaulay's misdeeds, and that's the plot I think.

The climax involves the kids getting into a fight which ends up with them off the side of a cliff, with Macaulay's mother trying to save both of them. She's not strong enough to pull both of the kids up, so she has to make a choice—either save the evil bastard Macaulay who happens to be her firstborn child, or save her nephew that she barely knows but knows he's a good kid. She eventually saves the good kid, and Macaulay Culkin falls to his death, screaming.

It wasn't "scary," but being about the same age as the kids in the movie kinda fucked with my head a little bit. I knew even at the time that she had made the right decision, but it was still kinda fucked up for a little kid to think about.

When I rewatched it as an adult, I realized it was kind of a bad movie, but it did teach me a good lesson—there is no such thing as unconditional love, and it's better that there isn't.

Fire in the Sky experiment scene.

Nothing has been able to top it.

The only movie that ever really genuinely frightened me as a kid was Dream Catcher. Aliens used to be super creepy to me.

The original Poltergeist. My sicko of a mom took me to see that in the theater. I had a clown doll and a tree outside my window.

Anything where a human would get eaten alive or disentigrated would fuck me up as a kid. I specifically remember the tripods in War of the Worlds and the Cyclops from the Odyssey having a lasting impact. If I had seen something like Attack on titan as a kid, I probably would have been a cutter by middle school.

the ring i guess