have seen that a police force became also necessary to maintain order among the citizens. This public power of coërcion exists in every state. It is not composed of armed men alone, but has also such objects as prisons and correction houses attached to it, that were unknown to gentilism. It may be very small, almost infinitesimal, in societies with feebly developed class antagonisms and in out of the way places, as was once the case in certain regions of the United States. But it increases in the same ratio in which the class antagonisms become more pronounced, and in which neighboring states become larger and more populous. A conspicuous example is modern Europe, where the class struggles and wars of conquest have nursed the public power to such a size that it threatens to swallow the whole society and the state itself.
In order to maintain this public power, contributions of the citizens become necessary—the taxes. These were absolutely unknown in gentile society. But to-day we get our full measure of them. As civilization makes further progress, these taxes are no longer sufficient to cover public expenses. The state makes drafts on the future, contracts loans, public debts. Old Europe can tell a story of them.