I'll agree with Classy in one respect - 5th grade school books should not contain derogatory racial slurs or profanity. True, most kids will hear that word many times a week, but not all. And when you are dealing with something as heinous as slavery, do derogatory racial slurs really add anything to the story? "We were taken in a neighboring tribe's raid and sold to white men, who took us across the ocean in horribly overcrowded ships. Many of us died. We were whipped bloody when we were slow to comply or argumentative. Then we were sold again to men who forced us to work their farms, fed us poorly, killed us if we tried to escape, made us live in ramshackle huts where we baked in the summer and froze in the winter, ripped away our children and sold them. And they called us names."
Really, does that last bit add anything? I think by this time the lack of respect is pretty much understood by everyone. If this book is to be part of a fifth grade curriculum, then they should arrange a cleaned up version. Just because this particular black man (the author) thinks this is appropriate for fifth graders doesn't mean every parent is going to agree, and in principle, a fifth grader's curriculum should be free of profanity and racial slurs even if the majority of them are already exposed to this.