After every foaming wave of political action a fructifying deposit remains behind from which a thousand stalks of economic struggle shoot forth. And conversely. The workers’ condition of ceaseless economic struggle with the capitalists keeps their fighting energy alive in every political interval; it forms, so to speak, the permanent fresh reservoir of the strength of the proletarian classes, from which the political fight ever renews its strength, and at the same time leads the indefatigable economic sappers of the proletariat at all times, now here and now there, to isolated sharp conflicts, out of which public conflicts on a large scale unexpectedly explode. Rosa Luxembrug, The Mass Strike, IV. The Interaction of the Political and the Economic Struggle