overthrown all the barriers that might have kept the crowd in
check.

We have a very slight knowledge of these crowds which are
beginning to be the object of so much discussion. Professional
students of psychology, having lived far from them, have always
ignored them, and when, as of late, they have turned their
attention in this direction it has only been to consider the
crimes crowds are capable of committing. Without a doubt
criminal crowds exist, but virtuous and heroic crowds, and crowds
of many other kinds, are also to be met with. The crimes of
crowds only constitute a particular phase of their psychology.
The mental constitution of crowds is not to be learnt merely by a
study of their crimes, any more than that of an individual by a
mere description of his vices.

However, in point of fact, all the world's masters, all the
founders of religions or empires, the apostles of all beliefs,
eminent statesmen, and, in a more modest sphere, the mere chiefs
of small groups of men have always been unconscious
psychologists, possessed of an instinctive and often very sure
knowledge of the character of crowds, and it is their accurate
knowledge of this character that has enabled them to so easily
establish their mastery. Napoleon had a marvellous insight into
the psychology of the masses of the country over which he
reigned, but he, at times, completely misunderstood the
psychology of crowds belonging to other races;[1] and it is
because he thus misunderstood it that he engaged in Spain, and
notably in Russia, in conflicts in which his power received blows
which were destined within a brief space of time to ruin it. A