"There can be no unity, federal or other, with liberal-labour politicians, with disruptors of the working-class movement, with those who defy the will of the majority. […]
Unity is a great thing and a great slogan. But what the workers’ cause needs is the unity of Marxists, not unity between Marxists, and opponents and distorters of Marxism.
[…] No flirting with the liquidators, no diplomatic negotiations with groups of wreckers of the corporate body; concentrate all efforts on rallying the Marxist workers around the Marxist slogans, around the entire Marxist body.
The class-conscious workers will regard as a crime any attempt to impose upon them the will of the liquidators; they will also regard as a crime the fragmentation of the forces of the genuine Marxists.
For the basis of unity is class discipline, recognition of the will of the majority, and concerted activities in the ranks of, and in step with, that majority. We shall never tire of calling all the workers towards this unity, this discipline, and these concerted activities."
Left unity is overrated
"There can be no unity, federal or other, with liberal-labour politicians, with disruptors of the working-class movement, with those who defy the will of the majority. […]
Unity is a great thing and a great slogan. But what the workers’ cause needs is the unity of Marxists, not unity between Marxists, and opponents and distorters of Marxism.
[…] No flirting with the liquidators, no diplomatic negotiations with groups of wreckers of the corporate body; concentrate all efforts on rallying the Marxist workers around the Marxist slogans, around the entire Marxist body.
The class-conscious workers will regard as a crime any attempt to impose upon them the will of the liquidators; they will also regard as a crime the fragmentation of the forces of the genuine Marxists.
For the basis of unity is class discipline, recognition of the will of the majority, and concerted activities in the ranks of, and in step with, that majority. We shall never tire of calling all the workers towards this unity, this discipline, and these concerted activities."
-V. I. Lenin