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 make of them an instrument of revolutionary struggle. But even if such a split should be necessary, it must be carried into effect only at a time when the Communists have succeeded by their incessant warfare against the opportunist leaders and their tactics, by their most active participation In the economic struggle, in persuading the wider masses of workmen that the split is occurring not because of the far-away and as yet incomprehensible aims of the Revolution, but on account of the concrete immediate interests of the working class in the development of its economic struggle. The tactics of the Communists, in case a necessity for split arises, must be a continuous most attentive study of the surrounding conditions, and of the question whether such a split might not lead to the isolation of the Communists from the labour masses.

6. Where a split between the opportunists and the revolutionary labour movement has already taken place before, where, as in America, alongside of the opportunist labour unions, there are unions with revolutionary tendencies—although not Communist ones—there the Communists are bound to support such revolutionary labour unions, to persuade them to abandon Syndicalist prejudices, and to side with the Communist Party, which alone is able to serve as a trustworthy compass in the complicated question of the economic struggle. But the