1 . The effect of bullying (欺凌) can be serious and even lead to tragedy. Unfortunately, it is still a mostly researched area.

    1     That year, two students with shotguns, both of whom had been considered gifted and who had been bullied for years, killed 13 people, wounded 24 and then committed suicide. A year later, an analysis by the US government found that bullying played a major role in more than two-thirds of the campus violence.

    2     Numerous invaders throughout history have tried to defend their bullying behavior by claiming that they themselves were bullied.     3     Although there is no justification for bullying, many of the worst humans in history have indeed bullies and victims of bullying.

Since bullying is often ignored, it may provide an important clue in crowd behavior and passer-by behavior.     4     Many of them have suggested bullying as one of the reasons of this becoming less sensitive to violence.     5     In this sense, bullying affects not only the bullied but his friends and classmates and the whole society.