Sandra Bland: What we know about her mysterious death in a jail cell

Why would a woman with a promising new job commit suicide after she was arrested over an argument for a minor traffic violation? That's the question on friends and families' minds after police said Sandra Bland, a 28-year-old black woman, killed herself in a Texas jail cell on July 13.

The mysterious death came after police pulled over Bland for failing to signal when changing lanes and arrested her, they claim, for allegedly assaulting a cop. Three days later she was found dea