Societies occasionally experience a phenomenon in which a group of people begin to act in unpredicted ways. This is referred to as collective behavior, the relatively spontaneous and unstructured behavior of a group of people who are reacting to a common influence in an ambiguous situation (Schaefer, 2018). 
Crowds, actions of disaster victims, and rumors are considered some forms of collective behavior.

Discuss at least 1 fad (try to pick 1 from your childhood) that seems to have faded away. Pictures (appropriate ones) are encouraged to refresh your classmates’ memories. 
How can collective behavior contribute to social movements and eventually social change?