There are many different types of school violence. The one that attracts the public's attention the most are school shootings. The term school shooting is basically defined as an act in which a student, school staff member, or outside intruder commits an act on the school campus. One of the most famous school shootings occurred at Columbine High School near Littleton, Colorado. On a Tuesday, April 20, 1999, Eric Harris and Dylan Klebold, students at Columbine High School, took the lives of thirteen other students before taking their own lives. When we think about events like this, there are many questions that cross our minds. Thoughts like why this happened, could it have been prevented, and what impact it had on those involved, just to name a few. There are probably many other thoughts that run through a nation's minds when we hear about traumatic events like a school shooting. No one can really give a definitive answer as to why school shootings actually occur. We look for clues and patterns that help us look inside the minds of those who go into schools to kill others. First let's look at the Columbine shooting. The two most widely believed reasons why Eric Harris and Dylan Klebold killed thirteen students and themselves were because they were being bullied and wanted revenge on the kids who had hurt them during high school. The other reason was that we would never know. It was just a strange thing that couldn't be explained. The two assassins wanted to become legends. They wanted to cause the greatest number of deaths in American history. They wired the bomb correctly so they wouldn't be able to kill as many people as they planned. The bomb in the canteen would have killed at least six hundred people. The survivors…half of the paper…were supposed to be the child of the traumatic event that occurred. The second category symptoms of PTSD are avoidance symptoms. It is here that the person who has experienced the trauma keeps himself away from places that could awaken in his memory the event that caused the trauma. The person may also seem emotionless. He or she may not want to feel that feeling again, so he or she will become emotionally numb to everything that happens around him. The person may also feel great guilt, depression, or worry. He or she may also lose interest in activities that he or she found enjoyable before the traumatic event. He or she may have difficulty remembering the event. Things that remind him of the event can cause avoidance symptoms. This may cause him or her to change his or her daily routine to avoid something that triggers the memory of the event.