Causes of school shootings: mental illness anxiety, depression. 2: family problems do not increase the likelihood of school shootings occurs; He just snapped" majority are pre-planned many students" have problems at home and do not become involved in crime. People who commit shootings are loners, isolates, young people who are disconnected from other. Some research often perpetrators have support from other kids in school. Most adolescents need guns to carry out such grand crimes most of these occur in rural communities where guns are readily available (esp. in. 1980s but it did not result in rampage shootings: violent media. Video games, tv shows, music the consuming of violent media triggers dangerous behaviour many things wrong with this. If there is a rampage school shooting, police launch an investigation and rummage around in the kids home. They might stumble upon violent movies and infer that this explained the actions of the student.