Bullying is the use of force, threaten, intimidate, abuse, or aggressively dominate others. The behavior is often repeated and habitual. Bullying is also characterized as an individual continuously acts in an aggressive and antisocial manner with peers or family. This is often caused by some anger or self-image issues. Justifications and rationalizations for such behavior sometimes include differences of social class, race, religion, gender, sexual orientation, appearance, behavior, body language, personality, reputation, lineage, strength, size, or ability. If bullying is done by a group, it is called mobbing. One essential prerequisite is the perception, by the bully or by others, of an imbalance of social or physical power. Behaviors used to obtain such domination can include verbal harassment, threatening gestures, physical assault, or coercion. Such acts may be consistently directed towards particular targets. “Targets” of bullying are also sometimes referred to as “victims” of bullying.