Without positive examples, children may lose understanding of reality, and their behavior may be deteriorated under the influence of living and learning environments that are marked by violence, humiliation and personal dignity. Any form of aggression on them, involuntarily, has many negative effects on personality development and also, generates violence. Children who are assaulted and discriminated for different aspects - skin color, origin, religion, abilities, etc. - in some cases, may experience serious depression and attempted suicide. Statistics show that there is a link between aggression and lack of self-esteem.