I'm still thinking about his argument. Race and class have been bound up in ways that are difficult to disentangle throughout our country's existence. Warren's argument seems to be a function of the question of whether or not African Americans are really more American than they are black, a question that has been perennially raised by black intellectuals. I think the themes he traces within black literature from the Jim Crow period are interesting and compelling, but I don't know that that removes the possibility of a contemporary African American literature that is both black and American and, depending on the content, part of a particular class or a diaspora or many other potential investigations.
Warren's first paragraph:
I'd like to make a claim that runs counter to much of literary scholarship. Historically speaking, the collective enterprise we call African-American or black literature is of recentvintage —in fact, it's just a little more than a century old. Further, it has already come to an end. And the latter is a fact we should neither regret nor lament.