In this Sunday, July 24, 2016, file photo, King Demetrius Pendleton hangs a sign on the gate of the Governor's Residence in St. Paul, Minn., as protesters demonstrate against the July 6 shooting death of Philando Castile by a St. Anthony police officer making a traffic stop in Falcon Heights, Mich. The Minnesota Bureau of Criminal Apprehension has been investigating the shooting by St. Anthony police Officer Jeronimo Yanez of Castile. The agency said Wednesday, Sept. 28, that it turned over its findings to prosecutors. (Scott Takushi/St. Paul Pioneer Press via AP, File)
In this Oct. 2, 2008, file photo, PBS journalist and debate moderator Gwen Ifill and then-Democratic vice presidential nominee, Sen. Joe Biden, D-Del., left, shake hands at the end of his vice presidential debate with Republican rival, Alaska Gov. Sarah Palin in St. Louis, Mo. Ifill died on Monday, Nov. 14, 2016, of cancer, PBS said. She was 61. (AP Photo/Don Emmert, File Pool)
In this Nov. 5, 2015 file photo, "NewsHour" co-anchor Gwen Ifill attends The Women's Media Center 2015 Women's Media Awards in New York. (Photo by Andy Kropa/Invision/AP, File)