Question: Which causes did Yuri Kochiyama advocate that promoted this subcategory of black nationalism, stemming from the idea of racial solidarity?
Sentence (from "Black separatism"): Black separatism is a subcategory of black nationalism, stemming from the idea of racial solidarity, and implies that blacks should organize themselves on the basis of their common experience of oppression as a result of their blackness, culture, and African heritage.
Relevant evidence: Yes