It's highly debatable, but I'm going to vote yes because the villain, a little girl, is portrayed as a stereotypical "sociopath" type who tricks a boy into killing an animal for her own gain.
Yes. A little boy has long been traumatized by the loss of his mother, and is recovering and going to a good school and being supported by his father and teachers, then is horribly re-traumatized, then by the end happy again.
Very briefly in two scenes. In one, the villain spies on her victim through a window at the beginning. Later she runs into a room trying to sneakily plant incriminating evidence on someone and hears a camera shutter click behind her and realizes she's not alone.
This one is really rough. A hyper-competitive little girl tricks a little boy into killing the class pet, a gerbil who was described as his best friend, in a very brutal way during a magic show. The entire plot of the episode revolves around proving it. It's shown in the first part of the episode.