Bullying
Repeated aggression, in the form of physical, verbal, and now electronic harassment, has deleterious effects on children’s physical health, sleep and eating patterns, academic success and sense of self. Communities, and parents, are beginning to interrupt the expectation that this is an acceptable rite of passage and many schools have impressive anti-bullying policy and enforcement.
http://www.mayoclinic.org/healthy-living/childrens-health/in-depth/bullying/art-20044918