One's usual sense of chronology and politics suggests that Russian poetry after 1917 was quite different from Russian poetry before 1917 and quite different from postwar European poetry. Perhaps the historians and politicians have again persuaded us into oversimplification, because Russian poetry did not change that way until the institutionalization of repression under industrial expansion in the late 1920's and early 1930's.
That Brjusov early became a Communist Party member was politically exiting to his friends, important for the Party, but not artistically significant. Like any “change,” it followed not from the character of the new but from the failure of the old, in this instance, from Brjusov's creative attrition. Brjusov did not so much become a member of the Party as he stopped being a non-member, much in the sense that he stopped being a Symbolist when the social principles and patterns which tolerated the esthetic values associated with Symbolism altered and, in alteration, required fresh satisfaction and different values.