I haven't finished yet, Parson, but what you characterize as "screaming, whining, and crying" I'm more inclined to see as degrees of outrage, much of it earned if not from personal experience then from close observation of events of the last two decades.
Again, though, I'm biased as a friend of Dianne and her husband. Maybe I compensate for the emotional because I can hear her voice in her writing. That said, I find it well-written in the sense of line by line enunciating her thoughts and positions clearly, moving her narrative along at a steady and involving pace. I agree, though, that the underpinning of blog posts is noticeable and problematic because it leads to repetition. Off-setting that, for me, I think she gains some rhetorical power from some of the repetition because it leads to restatements from slightly different perspectives, and from weaving her and her family's personal experience with a summary of events like the killing of Trayvon Martin and the trial of George Zimmerman and his post-trial behavior.
"She sees even the effort to move to a more nuanced position as blatant racism." This one, though, I'm not quite sure what you mean.
Randy M.