Dylann Roof, 21, charged with murdering nine worshippers at a historic black church in Charleston, S.C., in June, listens during court proceedings earlier this month.
Black Lives Matter activists confronted Democratic candidates Martin O'Malley and Bernie Sanders at a Netroots Nation event earlier this month. O'Malley used the phrase "all lives matter" twice, which he later apologized for.
Ross D. Franklin/AP
Wall graffiti at Facebook headquarters in Menlo Park, Calif. The company released a diversity report last month showing that 70 percent of employees are male; African-Americans comprise 2 percent of it workforce.
Robyn Beck/AFP/Getty Images
A guard motions to a medic (left) who arrived with a stretcher to Waller County Jail in Hempstead, Texas, on July 13, the day Sandra Bland died at the jail. Officials said Thursday that an autopsy did not find signs that Bland's death was a homicide.
Waller County Sheriff's Office/Landov