And then there are these two students who shoot and kill almost all students in the building. This part comes as a shock, just as it was for those students, and when I read about the film I realised it was based on a real incident. There was a kind of rhythm the director had build up in the movie and he destroys it at the end with that shock of massive killing. I definitely enjoyed the experience.
In the last scene, one of the killers is sitting in the cafeteria amongst the dead bodies of students and feeling the peace as opposed to what we have seen in the earlier scenes that the cafeteria is packed with students, and there are loud voices all around. Then, when the killers partners comes in enthusiastically and breaks the silence by proudly expressing his feelings, the first killer shoots him with horrific calm and sets down again to enjoy the peace! The peace he had earned!!