anomie

A person who feels alone and anxious because there doesn't seem to be anyone in charge of keeping order, feels a sense of anomie.

Anomie comes from the Greek anomos meaning "lawless," so anomie means a lack of moral standards, or a sense of lawlessness, or sometimes the anxiety that comes from being in a lawless place. In the novel "The Stranger" by Albert Camus, the narrator doesn't react like a normal person. When his mother dies and he is put on trial for murdering a man, he responds in an oddly numb way, expressing a sense of anomie.