The thing is, and I don't know if this theory sounds bad on my part, but part of me feels like these are not regular everyday black women getting arrested in SF. There Are not many black women in the city of SF. Most black women live in Oakland. Many of the black women being arrested in SF are most likely Homeless or crack heads.
The black women I see in The city SF are usually just business women(like my mother), obvious Students and or yuppie chicks, or they are literally crackheads. It'd be hard to believe any of these women other than the homeless and crackheads are the ones getting arrested. The fact that they disproportionately arrest black women is not a surprise though. Police Dna is the same nationwide.
I could be wrong though.