Conversation so far:
What conflicts did Marcus Garvey have with Du Bois?
Du Bois considered Garvey's program of complete separation a capitulation to white supremacy.
Can you elaborate?
a tacit admission that Blacks could never be equal to Whites.

Question: How did he approach the situation?
Self-contained rewrite: How did Du Bois approach Garvey's program of complete separation?