3. The interests of the working class demand the amalgamation of the workers of all the nationalities in a given state in united proletarian organisations—political, trade union, co-operative, educational, etc.
This amalgamation of the workers of different nationalities in single organisations will alone enable the proletariat to wage a victorious struggle against international capital and reaction, and combat the propaganda and aspirations of the landowners, clergy and bourgeois nationalists of all nations, who usually cover up their anti-proletarian aspirations with the slogan of “national culture”. The world working-class movement is creating and daily developing more and more an international proletarian culture.
V.I. Lenin, “Resolutions of the Summer, 1913, Joint Conference of the Central Committee of the R.S.D.L.P. and Party Officials”