On 14 December 2012, Sandy Hook Elementary School in Newtown, Connecticut was under attack. The attacker, Adam Lanza shot twenty children between six and seven years old, and six staff members. Then he committed suicide by shooting himself in the head. His relatives said Adam was apparently bullied and beaten when he was enrolled at the Sandy Hook. Lanza had launched this massacre as “act of revenge.” To prevent this kind of massacres, people need to control and avoid bullying. They need to know what caused it and their consequences on victims. Due to show their dominance others and raise social status, family environment when they grow up, jealously, being victims before, social media and internet, teens are in depression and anxiety, have