Answer:
groupthink.
Explanation:
Groupthink: In social psychology, the term is defined as a psychological phenomenon that arises in a specific group of people having the desire for conformity and harmony leads to dysfunctional or irrational decision-making outcome. It can often lead to problems, for example, bad decisions, lack of creativity, excessive resistance to new ideas, etc.
Example: Outbreak of riots.
In the question above, a sociologist might also conclude that this is a case of groupthink.