“In our eyes, individual terror is inadmissible precisely because it belittles the role of the masses in their own consciousness, reconciles them to their powerlessness, and turns their eyes and hopes towards a great avenger and liberator who some day will come and accomplish his mission. The anarchist prophets of the ‘propaganda of the deed’ can argue all they want about the elevating and stimulating influence of terrorist acts on the masses. Theoretical considerations and political experience prove otherwise. The more ‘effective’ the terrorist acts, the greater their impact, the more they reduce the interest of the masses in self-organisation and self-education. But the smoke from the confusion clears away, the panic disappears, the successor of the murdered minister makes his appearance, life again settles into the old rut, the wheel of capitalist exploitation turns as before; only the police repression grows more savage and brazen. And as a result, in place of the kindled hopes and artificially aroused excitement comes disillusionment and apathy.
The efforts of reaction to put an end to strikes and to the mass workers’ movement in general have always, everywhere, ended in failure. Capitalist society needs an active, mobile and intelligent proletariat; it cannot, therefore, bind the proletariat hand and foot for very long. On the other hand, the anarchist ‘propaganda of the deed’ has shown every time that the state is much richer in the means of physical destruction and mechanical repression than are the terrorist groups.
If that is so, where does it leave the revolution? Is it rendered impossible by this state of affairs? Not at all. For the revolution is not a simple aggregate of mechanical means. The revolution can arise only out of the sharpening of the class struggle, and it can find a guarantee of victory only in the social functions of the proletariat. The mass political strike, the armed insurrection, the conquest of state power—all this is determined by the degree to which production has been developed, the alignment of class forces, the proletariat’s social weight, and finally, by the social composition of the army, since the armed forces are the factor that in time of revolution determines the fate of state power.”
— Leon Trotsky, Why Marxists Oppose Individual Terrorism