I don't disagree but if you want people to listen to this story, you need to explain why this isn't "old news."
Also, and while this isn't fair or absolute, our society generally is more tolerant of misogyny or even sexual assault than racism. As this board has debated many times over, the role of women in sexual assaults continues to be at least on par with that of men – what was her behavior and did it contribute to the violation? Investigations into acts of racism, OTOH, now largely start with questioning the actions of the perpetrators.
All of which is to say, Manning is on much shakier ground as a privileged, drawling southerner suggesting his accuser slept with black men than he is accusing her of asking for it or being a lesbian.