https://www.marxists.org/archive/lenin/works/1920/lwc/ch08.htm

Infantile Disorders of Left-Wing Communism, Chapter 8:

Every proletarian—as a result of the conditions of the mass struggle and the acute intensification of class antagonisms he lives among—sees the difference between a compromise enforced by objective conditions (such as lack of strike funds, no outside support, starvation and exhaustion)—a compromise which in no way minimises the revolutionary devotion and readiness to carry on the struggle on the part of the workers who have agreed to such a compromise—and, on the other hand, a compromise by traitors who try to ascribe to objective causes their self-interest (strike-breakers also enter into “compromises”!), their cowardice, desire to toady to the capitalists, and readiness to yield to intimidation, sometimes to persuasion, sometimes to sops, and sometimes to flattery from the capitalists.

https://www.marxists.org/archive/lenin/works/1920/lwc/ch08.htm