„It is only possible to safeguard the supremacy of the working class by forcing the bourgeoisie accustomed to rule, to realize that it is too dangerous an undertaking for it to revolt against the dictatorship of the proletariat, to undermine it by conspiracies, sabotage, insurrections, or the calling in foreign troops.“

— Leon Trotsky
„Dictatorship is rule based directly upon force and unrestricted by any laws. The revolutionary dictatorship of the proletariat is rule won and maintained by the use of violence by the proletariat against the bourgeoisie, rule that is unrestricted by any laws.“
— Vladimir Lenin
„The State is a machine in the hands of the ruling class for suppressing the resistance of its class enemies. in this respect the dictatorship of the proletariat does not differ essentially from dictatorship of any other class, for the proletarian State is a machine for the suppression of the bourgeoisie.“
— Joseph Stalin
„The socialist revolution was a pure and simple question of ‘force.’… Between the [bourgeoisie and the proletariat] no accord is possible. One must disappear. The weaker will be ‘eliminated.’ The class struggle is therefore a question of ‘force.“
— Benito Mussolini
„The dictatorship is necessary because it is a case, not of partial changes, but of the very existence of the bourgeoisie. No agreement is possible on this ground. Only force can be the deciding factor.“
— Leon Trotsky
„The bourgeoisie today is a falling class. … By its imperialist methods of appropriation [it] is destroying the economic structure of the world and human culture generally. Nevertheless, the historical persistence of the bourgeoisie is colossal. It holds to power, and does not wish to abandon it. Thereby it threatens to drag after it into the abyss the whole of society. We are forced to tear it off, to chop it away. The Red Terror is a weapon utilized against a class, doomed to destruction, which does not wish to perish. If the White Terror can only retard the historical rise of the proletariat, the Red Terror hastens the destruction of the bourgeoisie.“
— Leon Trotsky
„he Party is the highest form of organisation of the proletariat. The Party is the principle guiding force within the class of the proletarians and among the organisations of that class. But it does not by any means follow from this that the Party can be regarded as an end in itself, as a self-sufficient force. The Party is not only the highest form of class association of the proletarians; it is at the same time an instrument in the hands of the proletariatfor achieving the dictatorship, when that has not yet been achieved and for consolidating and expanding the dictatorship when it has already been achieved. The Party could not have risen so high in importance and could not have exerted its influence over all other forms of organisations of the proletariat, if the latter had not been confronted with the question of power, if the conditions of imperialism, the inevitability of wars, and the existence of a crisis had not yet demanded the concentration of all the forces of the proletariat at one point, the gathering of all the threads of the revolutionary movement in one spot in order to overthrow the bourgeoisie and to achieve the dictatorship of the proletariat. The proletariat needs the Party first of all as its General Staff, which it must have for the successful seizure of power. It scarcely needs proof that without a party capable of rallying around itself the mass organisations of the proletariat, and of centralising the leadership of the entire movement during the progress of the struggle, the proletariat in Russia could not have established its revolutionary dictatorship.“
— Joseph Stalin
„To become the ruling class and defeat the bourgeoisie the proletariat must be schooled, because the skill this implies does not come ready-made, The proletariat must do its learning in the struggle, and stubborn, desperate struggle in earnest is the only real teacher. The greater the extremes of the exploiters' resistance, the more vigorously, firmly, ruthlessly and successfully will they be suppressed by the exploited.“
— Vladimir Lenin
„The State is a machine in the hands of the governing class for suppressing the resistance of its class antagonists. In this way the dictatorship of the proletariat differs in no way essentially from the dictatorship of any other class.“
— Joseph Stalin
„If democracy has become superfluous or annoying to the bourgeoisie, it is on the contrary necessary and indispensable to the working class. It is necessary to the working class because it creates the political forms (autonomous administration, electoral rights, etc.) which will serve the proletariat as fulcrums in its task of transforming bourgeois society. Democracy is indispensable to the working class because only through the exercise of its democratic rights, in the struggle for democracy, can the proletariat become aware of its class interests and its historic task.“
— Rosa Luxemburg
„The way the enemies of the proletariat take advantage of every deviation from a thoroughly consistent communist line was perhaps most strikingly shown in the case of the Kronstadt mutiny, when the bourgeois counter-revolutionaries and whiteguards in all countries of the world immediately expressed their readiness to accept the slogans of the Soviet system, if only they might thereby secure the overthrow of the dictatorship of the proletariat in Russia, and when the Socialist revolutionaries and the bourgeois counter-revolutionaries in general resorted in Kronstadt to slogans calling for an insurrection against the Soviet Government of Russia ostensibly in the interest of the Soviet power.“
— Vladimir Lenin
„When the workers of a single factory or of a single branch of industry engage in struggle against their employer or employers, is this class struggle? No, this is only a weak embryo of it. The struggle of the workers becomes a class struggle only when all the foremost representatives of the entire working class of the whole country are conscious of themselves as a single working class and launch a struggle that is directed, not against individual employers, but against the entire class of capitalists and against the government that supports that class. Only when the individual worker realizes that he is a member of the entire working class, only when he recognises the fact that his petty day-to-day struggle against individual employers and individual government officials is a struggle against the entire bourgeoisie and the entire government, does his struggle become a class struggle.“
— Vladimir Lenin
„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.A bourgeoisie armed against the proletariat is one of the biggest fundamental and cardinal facts of modern capitalist society. And in face of this fact, revolutionary Social-Democrats are urged to “demand” “disarmament”! That is tantamount of complete abandonment of the class-struggle point of view, to renunciation of all thought of revolution. Our slogan must be: arming of the proletariat to defeat, expropriate and disarm the bourgeoisie. These are the only tactics possible for a revolutionary class, tactics that follow logically from, and are dictated by, the whole objective development of capitalist militarism. Only after the proletariat has disarmed the bourgeoisie will it be able, without betraying its world-historic mission, to consign all armaments to the scrap-heap. And the proletariat will undoubtedly do this, but only when this condition has been fulfilled, certainly not before.“
— Vladimir Lenin