"It is utterly unsocialistic, reactionary and in truth outrageous, and I hope you will oppose with all your power. The plea that certain races are to be excluded because of tactical expediency would be entirely consistent in a bourgeois convention of self-seekers, but should have no place in a proletarian gathering under the auspices of an international movement that is calling on the oppressed and exploited workers of all the world to unite for their emancipation."