This is why it happens that it is always the marvellous and legendary side of events that more specially strike crowds. When a civilisation is analysed it is seen that, in reality, it is the marvellous and the legendary that are its true supports. Appearances have always played a much more important part than reality in history, where the unreal is always of greater moment than the real.
Crowds being only capable of thinking in images are only to be impressed by images. It is only images that terrify or attract them and become motives of action.
For this reason theatrical representations, in which the image is shown in its most clearly visible shape, always have an enormous influence on crowds. Bread and spectacular shows constituted for the plebeians of ancient Rome the ideal of happiness, and they asked for nothing more. Throughout the successive ages this ideal has scarcely varied. Nothing has a greater effect on the imagination of crowds of every category than theatrical representations. The entire audience experiences at the same time the same emotions, and if these emotions are not at once transformed into acts, it is because the most unconscious spectator cannot ignore that he is the victim of illusions, and that he has laughed or wept over imaginary adventures. Sometimes, however, the sentiments suggested by the images are so strong that they tend, like habitual suggestions, to transform themselves into acts. The story has often been told of the manager of a popular theatre who, in consequence of his only playing sombre dramas, was obliged to have the actor who took the part of the traitor protected on his leaving the theatre, to defend him against the violence of the spectators, indignant at the crimes, imaginary though they were, which the traitor had committed.