For John, BLUF: The deaths of Black people at the hands of police seems more concerning that at the hands of other Black people. Nothing to see here; just move along.
She died overnight, in her jail cell, apparently from hanging herself. There was a suggestion she presented as unstable, but then there was no suicide watch, which is strange. I am open to other things going on, but speculation is worthless in this case.
What is important at this time is that Ms Marable, a normal middle class person (her Father a church deacon and her Father in Law who rose of Chief Master Sergeant in the Air Force, no mean accomplishment). It is how she experiences the death of Ms Sandra Bland that is interesting and worth the read.
Regards — Cliff
♠ It appears she would have been safer driving in Massachusetts, where lane changes are only infrequently signaled.