C. Jay Smith faces an extra 10 years after she filed a complaint.
The government and community have responded with support and solidarity.
Another person hit in the footage is in intensive care.
They come amid a wave of recent reports of violence against Black trans folks including a mysterious death and a brutal assault.
When queer activists in the Middle East and North Africa complained about posts threatening the lives of LGBTQ+ people, Facebook didn't think they violated its policies.
Mack joins Brayla Stone, Dominique Fells, and Riah Milton who were also violently killed in recent weeks.