I can't see what people find racist about Jared Diamonds books, especially not Guns, Germs and Steel.
Can somebody please given an example of a passage from Guns, Germs and Steel that was racist? Diamond has written in more than one of his books that we can modern society has a lot to learn from primitive societies, and some people have said this is harks back to the idea of the noble savage, and that supposedly is racist. I think this is a distortion of Diamond's message.
Other criticisms include factual errors. For example, one anthropologist criticized Diamond for citing a date of around 13K BCE for the arrival of humans in North America, while, apparently according to the reviewer there was research available at the time of publication that has pushed this date back a few thousand years. To me this is nit-picking and does not detract from Diamond's hypothesis. Diamond is communicating a big picture theory. If your primary interest is the arrival of the first humans in America then I suggest reading a more specialized book (perhaps After the Ice by Steven Mithen, which by the way is a great read).
Another critical reviewer said that while Diamond explained how Europeans were able to conquer the Americas (using guns, germs and steel), he said nothing of the the morality of the conquest. To me, such a criticism is beside the point, and nothing to do with the purpose of the book.
Diamond is criticized for being an geographical determinist. But I didn't get the impression that Diamond was saying the geography was all that mattered, rather that is was an important factor. Surely he is right in this regard. Take the Australian Aboriginals: Diamond points out that there were few plants or animals suitable for domestication. On this point he is right. To this date, the only form of native Australia life that has been domesticated for agriculture from Australia is the macadamia nut (that I am aware of).
Maybe I am just not educated enough to appreciate these criticisms. Okay, well perhaps what makes this book a good choice for the book club is the fact that is both hugely popular and controversial. I look forward to seeing this book deconstructed.