A class-labor system, any class-labor system, all class-labor systems—_provide, by means of institutions_, the LEGAL conditions and opportunities at the industrial foundations of society for part of society, a class, to act directly or indirectly as parasites; and it is _entirely natural_ that that part of society, in pursuing their own interests, should use their opportunity to act like parasites. And it is _entirely natural_ also that there should be resistance by the producers, and therefore class struggle, class war. Indeed all class-labor forms of society are industrially so _brutally unjust and therefore so irritating_ that the _largest_ fact in such societies is an eternal, internal, infernal conflict of industrial class interests—an endless civil war in industry, a class war, a class struggle, _around and around the industrial foundations of society._ (See pages 167–70.) _Antagonism_ is thus in the _Structure_ of _class_-form society. This helps to an understanding of past and present conflicts. It becomes evident that the source of war is to be found at the industrial foundations of society. War—war broadly considered—the class struggle, throughout the history of civilized society is no more and no less than the natural aggressive robbery by a part of society provided with an opportunity to rob and the natural resistance of the class that is robbed. WAR, THE WAR, IS AGGRESSION AND RESISTANCE—ROBBERY AND RESISTANCE—PLUNDER AND PROTEST:— (1) The aggressive industrial robbery by one class, and (2) The resistance to industrial robbery by the other class. Not only in the history of civilized peoples everywhere for thousands of years, but also in our own present-day capitalist society everywhere, we see this natural aggression and natural resistance. The result today—as in the past—is struggle, war, class war—between the parasites and the producers. _The_ war is the _class_ war. Modern “foreign” wars are simply contests between different groups of capitalists (the workers of course doing the fighting and bleeding) _to extend the area of opportunity for industrial class robbery_, and are thus simply _phases_ and _extensions_ of the class war. War, then, begins with aggression, continues with aggression; and is at present extended by aggressive foreign wars of industrial or commercial conquest. _To summarize._ (_a_) _War, conflict, class aggression and class resistance, are inherent in all class-labor forms of society._ (_b_) _Capitalism is a class-labor form of society._ (_c_) _Therefore, under capitalism there will be, there must be as long as capitalism lasts—class aggression and class resistance, class conflict—class war._ THE CONCLUSION CANNOT BE DODGED: PEACE IS IMPOSSIBLE—UNDER CAPITALISM.