"Economism" was an opportunist current in Russian Social Democracy. Its political essence reduced itself to the program: "to the workers—economic struggle, to the liberals—political struggle." Its principal theoretical support was the so-called "legal Marxism" or "Struvism," which "recognized" Marxism completely purged of all revolutionism and adapted to the needs of liberal bourgeoisie. Citing the underdevelopment of the Russian working masses, desiring to "move with the masses," the "Economists" limited the tasks and scope of the workers' movement to economic struggle and political support for liberalism, setting themselves neither independent political nor any revolutionary tasks. The old "Iskra" (1900–1903) victoriously conducted the struggle against "Economism" in the name of the principles of revolutionary Social Democracy. All the flower of conscious proletariat stood on the side of "Iskra." Several years before the revolution, Social Democracy came forward with the most consistent and uncompromising program. And the class struggle, the coming forward of the masses during the 1905 revolution, confirmed this program. The "Economists" accommodated themselves to the backwardness of the masses. "Iskra" educated the vanguard of the workers, capable of leading the masses forward. The present arguments of social-chauvinists (about the necessity of taking the masses into account, about the progressiveness of imperialism, about the "illusions" of revolutionaries, etc.) were all already put forward by the "Economists." Russian Social Democracy became acquainted with the opportunist reworking of Marxism into "Struvism" 20 years ago.