Who are the bullies? We can vilify them or we can understand them.
It has long been understood that people who bully others are emotionally damaged. Social learning begins at birth. Through day to day experiences and interaction with others, a child begins to form a worldview. Abuse and neglect do cause emotional damage and this damage can begin as early as infancy. The family of origin is where the child learns social skills and develops his or her worldview. Imagine the worldview of a child who grows up in an abusive or neglectful home.