People maneuver amongst tear gas in uptown Charlotte, NC during a protest of the police shooting of Keith Scott, in Charlotte, North Carolina, September 21, 2016. REUTERS/Jason Miczek

National Guard personnel assemble at the National Guard Armory after NC Gov. Pat McCrory ordered a state of emergency following protests against the police shooting of Keith Scott, in Charlotte, North Carolina, U.S. September 22, 2016. REUTERS/Jason Miczek

A worker sweeps up broken glass at the United Way of Central Carolina after protests against the police shooting of Keith Scott, in Charlotte, North Carolina, U.S. September 22, 2016. REUTERS/Jason Miczek

National Guard personnel guard the front gate at the National Guard Armory after NC Gov. Pat McCrory ordered a state of emergency following protests against the police shooting of Keith Scott, in Charlotte, North Carolina, U.S. September 22, 2016. REUTERS/Jason Miczek

Chicago Mayor Rahm Emanuel (R) speaks at a news conference for the third annual Summer of Faith and Action calling for violence prevention with Chicago Police Superintendent Eddie Johnson in Chicago, Illinois, United States, May 19, 2016. REUTERS/Jim Young

A Chicago police officer attends a news conference announcing the department's plan to hire nearly 1,000 new police officers in Chicago, Illinois, U.S., September 21, 2016. REUTERS/Jim Young

Invited guests for the world premiere of the Boeing 787 Dreamliner are reflected in the fuselage of the aircraft at the 787 assembly plant in Everett, Washington, in this July 8, 2007 file photo. REUTERS/Robert Sorbo/Files

New York Mayor Bill de Blasio speaks during a news conference at Rikers Island jail in New York City, U.S. September 1, 2016. REUTERS/Brendan McDermid -