Hive Mind (noun)
hive mind or hive·mind

noun
1. the property of apparent sentience in a colony of social insects acting as a single organism, each insect performing a specific role for the good of the group.
2. Psychology, Sociology.
a. a collective consciousness, analogous to the behavior of social insects, in which a group of people become aware of their commonality and think and act as a community, sharing their knowledge, thoughts, and resources: the global hive mind that has emerged with sites like Twitter and Facebook.
b. such a group mentality characterized by uncritical conformity and loss of a sense of individuality and personal accountability.

Origin: 1958, in the meaning defined at def 1

EXAMPLES FROM THE WEB FOR HIVE MIND
The site is not a hive-mind hegemon, nor even an organized media property.
WHY GAWKER SHOULD LOSE ITS WAR WITH REDDIT|ALEX KLEIN|OCTOBER 18, 2012|DAILY BEAST

Now YOU come up with a sentence (or fic? or graphic?) that best illustrates the word.