[Mashiro]

I've watched the movie "Klaas" from 2007 about mobbing in schools that leads to school shootings. Sad truth that is. You should watch it. It's a no BS movie. Nothing about video games, action movies or other nonsense stuff that people make responsible for school shootings. It is about the people or groups that are responsible by mobbing others, attacking them and etc.

https://en.wikipedia.org/wiki/The_Class_(2007_film)