Answer:
Groupthink
Step-by-step explanation:
Groupthink is a psychological phenomenon which occurs when members of a certain group decided to conform to the majority opinion/perspective held by the group even if it contradicts their own personal belief.
Typically, groupthink is caused by inherent desire to avoid being regarded as an outcasts by other members of the group. So rather than saying different opinion and distort the harmony within the group, they decided to bow down to the group's view and create an illusion of unanimity.