The love/hater of children

Recently newspapers and mass media in general claim that the violence of children became unlimited and huge. The problem became so important that teachers refuse to work and to educate children.
The shot from the gun for the reproving, the sulphuric acid on the face of the teacher because of the low mark for the test, the stone dropped on the head of the teacher for not giving the word during the lesson. These are only several examples of revenge that became known to the press.
According to statistics the number of violence used against teachers increased on 50%. And such violence keeps developing and taking more violent forms.
One of the recent cases was the attack of the child on the teacher of physics because the teacher didn't put the mark that the child wanted. The child made nine knife wounds.
In November 2005 the world was stricken by the news that appeared on the screens of people's TV sets from almost the whole world. The child attacked the woman because she refused to give it the stamp to send the letter. Thanks God, the woman managed to survive.
The boy of the fifth grade didn't do the home task and started to beat the teacher because she asked him to give his exercise-book with the done home work.
What happens with out children? What will be the next? Where does this violence come from?