An individual in a crowd is usually lost, more or less--mentally no
less than physically. If the crowd is carried away by some emotion or
intense excitement, so is the individual in it. Crowd psychology is
generally primitive; emotions overrule intellect. An interesting work
upon this subject is G. LeBon’s “Psychology of the Crowd.” See also
McDougall’s “The Group Mind,” and Trotter’s “Instincts of the Herd in
Peace and War.”