You shouldn't yell at your teachers.
John is in class passing notes when his teacher Mary notices him and takes the note away.
John wants to react to what just happened.
John apologizes to the teacher for being distracted during class and distracting others as well.
John screams at the teacher to give his note back to him, that it's his and that she's mean and unfair.
Mary is glad to see John taking responsibility for his mistake and it makes her smile.
Mary is taken aback by how aggressive and violent John is being and is afraid for her safety.