An oppressed class which does not strive to learn to use arms, to acquire arms, only deserves to be treated like slaves. We cannot, unless we have become bourgeois pacifists or opportunists, forget that we are living in a class society from which there is no way out, nor can there be, save through the class struggle. In every class society, whether based on slavery, serfdom, or, as at present, wage-labor, the oppressor class is always armed. Not only the modern standing army, but even the modern militia—and even in the most democratic bourgeois republics, Switzerland, for instance—represent the bourgeoisie armed against the proletariat. That is such an elementary truth that it is hardly necessary to dwell upon it. Suffice it to point to the use of troops against strikers in all capitalist countries.

Vladimir Ilyich Lenin
The Military Programme of the Proletarian Revolution: II

The increase in the export of capital to the colonies and dependent countries; the expansion of "spheres of influence" and colonial possessions until they cover the whole globe; the transformation of capitalism into a world system of financial enslavement and colonial oppression of the vast majority of the population of the world by a handful of "advanced" countries all this has, on the one hand, converted the separate national economies and national territories into links in a single chain called world economy, and. on the other hand, split the population of the globe into two camps: a handful of "advanced" capitalist countries which exploit and oppress vast colonies and dependencies, and the huge majority consisting of colonial and dependent countries which are compelled to wage a struggle for liberation from the imperialist yoke.