To be exiled is to be away from one's home (i.e. city, state or country), while either being explicitly refused permission to return and/or being threatened with imprisonment or death upon return. It can be a form of punishment. Exile can also be a self-imposed departure from one's homeland. Self-exile is often seen to be in some way a protest by the person that claims it, to avoid persecution or legal matters ( tax,criminal allegations, or otherwise),through shame or repentance, or perhaps to isolate oneself in order to devote time to a particular thing. Article 9 of the Universal Declaration of Human Rights states that, "No one shall be subjected to arbitrary arrest, detention or exile." Social health of a society is defined as how well the society does at offering every citizen the equal opportunity to obtain access to the goods and services critical to being able to function as a contributing member of society. The existence of outcasts can be seen as a sign of a society's declining or inadequate social health.
see also :Social rejection