With blood covering her hand and arm, a woman points at a police officer on September 21, 2016 in Charlotte, NC. (Sean Rayford/Getty Images)

With blood covering her hand and arm, a woman points at a police officer on September 21, 2016 in Charlotte, NC. (Sean Rayford/Getty Images)

Stories this photo appears in:

Tease photo

New Documents Reveal FBI Secretly Monitored Protests, Feared 'Black Supremacist' Attack

Newly released FBI and Department of Homeland Security documents reveal federal law enforcement agencies worried that violent “Black Supremacist Extremists” would kill police officers, attack the Democratic National Convention and the cause chaos Republican National Convention.