A cursory survey of the history of revolutions suggests that the most radical and the most successful of them have been religious. Of this type of revolution Christianity is the most conspicuous example.

6. Classification of the Materials

The materials in this chapter have been arranged under the headings: (a) social contagion, (b) the crowd, and (c) types of mass movements. The order of materials follows, in a general way, the order of institutional evolution. Social unrest is first communicated, then takes form in crowd and mass movements, and finally crystallizes in institutions. The history of almost any single social movement—woman's suffrage, prohibition, protestantism—exhibit in a general way, if not in detail, this progressive change in character. There is at first a vague general discontent and distress. Then a violent, confused, and disorderly, but enthusiastic and popular movement, and finally the movement takes form; develops leadership, organization; formulates doctrines and dogmas. Eventually it is accepted, established, legalized. The movement dies, but the institution remains.

a) Social contagion.—The ease and the rapidity with which a cultural trait originating in one cultural group finds its way to other distant groups is familiar to students of folklore and ethnology. The manner in which fashions are initiated in some metropolitan community, and thence make their way, with more or less rapidity, to the provinces is an illustration of the same phenomenon in a different context.

Fashion plays a much larger rôle in social life than most of us imagine. Fashion dominates our manners and dress but it influences also our sentiments and our modes of thought. Everything in literature, art or philosophy that was characteristic of the middle of the nineteenth century, the "mid-Victorian period," is now quite out of date and no one who is intelligent now-a-days practices the pruderies, defends the doctrines, nor shares the enthusiasms of that period. Philosophy, also, changes with the fashion and Sumner says that even mathematics and science do the same. Lecky in his history of Rationalism in Europe describes in great detail how the belief in witches, so characteristic of the Middle Ages, gradually disappeared with the period of enlightenment and progress.[293] But the enlightenment of the eighteenth century was itself a fashion and is now quite out of date. In the meantime a new popular and scientific interest is growing up in obscure mental phenomena which no man with scientific training would have paid any attention to a few years ago because he did not believe in such things. It was not good form to do so.

But the changes of fashion are so pervasive, so familiar, and, indeed, universal phenomena that we do not regard the changes which they bring, no matter how fantastic, as quite out of the usual and expected order. Gabriel Tarde, however, regards the "social contagion" represented in fashion (imitation) as the fundamental social phenomenon.[294]

The term social epidemic, which is, like fashion, a form of social contagion, has a different origin and a different connotation. J. F. C. Hecker, whose study of the Dancing Mania of the Middle Ages, published in 1832, was an incident of his investigation of the Black Death, was perhaps the first to give currency to the term.[295] Both the Black Death and the Dancing Mania assumed the form of epidemics and the latter, the Dancing Mania, was in his estimation the sequel of the former, the Black Death. It was perhaps this similarity in the manner in which they spread—the one by physical and the other by psychical infection—that led him to speak of the spread of a popular delusion in terms of a physical science. Furthermore, the hysteria was directly traceable, as he believed, to the prevailing conditions of the time, and this seemed to put the manifestations in the world of intelligible and controllable phenomena, where they could be investigated.

It is this notion, then, that unrest which manifests itself in social epidemics is an indication of pathological social conditions, and the further, the more general, conception that unrest does not become social and hence contagious except when there are contributing causes in the environment—it is this that gives its special significance to the term and the facts. Unrest in the social organism with the social ferments that it induces is like fever in the individual organism, a highly important diagnostic symptom.

b) The crowd.—Neither Le Bon nor any of the other writers upon the subject of mass psychology has succeeded in distinguishing clearly between the organized or "psychological" crowd, as Le Bon calls it, and other similar types of social groups. These distinctions, if they are to be made objectively, must be made on the basis of case studies. It is the purpose of the materials under the general heading of "The 'Animal' Crowd," not so much to furnish a definition, as to indicate the nature and sources of materials from which a definition can be formulated. It is apparent that the different animal groups behave in ways that are distinctive and characteristic, ways which are predetermined in the organism to an extent that is not true of human beings.

One other distinction may possibly be made between the so-called "animal" and the human crowd. The organized crowd is controlled by a common purpose and acts to achieve, no matter how vaguely it is defined, a common end. The herd, on the other hand, has apparently no common purpose. Every sheep in the flock, at least as the behavior of the flock is ordinarily interpreted, behaves like every other. Action in a stampede, for example, is collective but it is not concerted. It is very difficult to understand how there can be concerted action in the herd or the flock unless it is on an instinctive basis. The crowd, however, responds to collective representations. The crowd does not imitate or follow its leader as sheep do a bellwether. On the contrary, the crowd carries out the suggestions of the leader, and even though there be no division of labor each individual acts more or less in his own way to achieve a common end.