The data behind the graphic in the story "How to turn filming the police into the end of police brutality" on MIT Technology Review. It tracks police killings of black Americans that involved publicly-released footage (smartphones, body cams, or other) and sparked protests. Research and compilation by Tate Ryan-Mosley. Visualization by Karen Hao.

• Arrest date: The date of the victim's arrest
• Victim of police death: The name of the victim
• Number of protests: The number of protests held in the name of the victim, pulled from Elephrame's Database of Black Lives Matter protests on June 9, 2020. Numbers before 2014 are roughly estimated from media reports.
• Notable attempts at reform and/or justice: Reforms, legislation, or other notable events sparked by the killing.
• Source: Reference news articles

• June 10, 2020: Corrected Trayon Martin's description on the graphic. His shooter, George Zimmerman, was not a police officer but the neighborhood watch coordinator of his gated community. Nonetheless Martin's murder is important because it sparked the #BlackLivesMatter movement.