As a follow up, I've read a bunch of Unqualified Reservations since this whole brouhaha started (and I read some before, I find it occasionally amusing) and I've never seen any of the racism or hate speech I see claimed. I have seen a lot of out-of-context examples, but every one I tracked down was simply using shocking imagery to make a larger point. There is quite a bit that speaks frankly of slavery and the relationships involved, but nothing I've seen that I could consider racist, unless the very concept of slavery is supposed to be considered racist... which is ridiculous, in my opinion.
edit: wording