Scapegoating

On form of intimidation (perhaps, the most common, and perhaps the route of all bullying?) is scapegoating
http://en.wikipedia.org/wiki/Scapegoat

The word is more widely used as a metaphor, referring to someone who is blamed for misfortunes, generally as a way of distracting attention from the real causes.

Scapegoating in psychoanalytic theory

Psychoanalytic theory holds that unwanted thoughts and feelings can be unconsciously projected onto another who becomes a scapegoat for one's own problems. This concept can be extended to projection by groups. In this case the chosen individual, or group, becomes the scapegoat for the group's problems. In other words, blaming another person or thing, for your own problems. In this context, making scapegoats is the deliberate process of bully. If the scapegoating pattern continues into early adulthood, development towards healthy personal identity is likely to be compromised, with strong likelihood of histrionic, compensatory narcissistic, and/or obsessive-compulsive, as well as passive-aggressive traits. Fully-criteria personality disorders are likely, leading to severe, ego-protecting "affect management behaviors" including alcoholism, drug addiction and other substance and behavioral process disorders.