Man this one was a mixed bag.
The title would give you the impression that Class, Race and Marxism is a book on politics or political philosophy; deceptively, it's actually a smattering of essays and personal reflections on the history of the discourse surrounding marxism and its perceived collision with 'identity politics'. Even more specifically, it concerns only the (very niche) storm centring around the book's author, David Roediger. To defend himself against the idea that he might have left the marxist ideosphere, Roediger provides evidence of three things: biographical data charting the historical interest of marxist theoreticians in questions of race and gender from the mid-20th century and earlier, the development of racial identification within the context of US slavery, and the historical difficulty of asserting a-racial class 'solidarity'.
The second and third parts are solid and good: demonstrating the 'rational' way in which the interests of capital pushed for racial chauvinism among workers, the essays convincingly push back against the hyperfrankfurtian narrative of capital as being the ultimate universal equivalizer that usurps older identitarian distinctions but does not create them. The essay on solidarity and the fate of the American Indians, on the other hand, amply problematizes the notion of 'solidarity' and forces the reader to confront the negative exclusionism always latent in the term: from the sham of Athenian democracy to the anti-Chinese labour movements in the early 20th ct US, it has been all too easily co-optable by narrow, divisive social segregation.
The first half, however, fails to properly introduce and contextualize its topic and its relevance to the reader, and as such half of it comes off as petty internecine squabbling, while the other just doesn't hold the uninformed reader's attention, smacking them around the ears with biographical tidbits which inclusion the book spends no time justifying. Looking beyond that, this reader felt the general structure could have been much more thought-out, making the read seem less like an arbitrary informational cavalcade loosely connected by the idea of marxism (which, incidentally, remains for the most part undiscussed at a political/philosophical level; this text focuses purely and simply on the historical-discursive layer).
A soft recommendation, but know what you're getting into - which you wouldn't, going by the title.