From the special series 1871-2021. The 150 th anniversary of the Paris Commune The struggle, by now more than a hundred years old, between the proletariat and the bourgeoisie encompasses the whole world. One hundred and fifty years ago, in March 1871, in a single city — Paris — and in a very short time span — 72 days — the assault on the sky attempted by the proletariat and ferociously repressed by a rising bourgeoisie resolved, in practice, fundamental theoretical issues of socialism that until that moment only had provisional solutions. In the Manifesto [1848], Marx and Engels had limited themselves to stating that the indispensable precondition for the communist revolution was the conquest of democracy , i.e., the conquest of the state machinery on the part of the proletariat. However, it remained to be seen whether and to what extent the dictatorship of the proletariat could avail itself of the bourgeois state machinery. Moreover, in the definition Lenin gives, Marx’s theo...