Loans Arena, Sunday, July 17, 2016, in Cleveland. (AP Photo/Matt Rourke)

A demonstrator has a sticker taped over her mouth during a march by various groups, including "Black Lives Matter" and "Shut Down Trump and the RNC" ahead of the Republican National Convention in Cleveland, Ohio, U.S. July 17, 2016. REUTERS/Lucas Jackson

Demonstrators join in a march by various groups, including "Black Lives Matter" and "Shut Down Trump and the RNC" ahead of the Republican National Convention in Cleveland, Ohio, U.S. July 17, 2016. REUTERS/Lucas Jackson

Polic hem in demonstrators with their bicycles as they join in a march by various groups, including "Black Lives Matter" and "Shut Down Trump and the RNC" ahead of the Republican National Convention in Cleveland, Ohio, U.S. July 17, 2016. REUTERS/Lucas Jackson

Police block a downtownstreet with their bicycles during a march by various groups, including "Black Lives Matter" and "Shut Down Trump and the RNC" ahead of the Republican National Convention in Cleveland, Ohio, U.S. July 17, 2016. REUTERS/Shannon Stapleton

Police block a downtown street with their bicycles during a march by various groups, including "Black Lives Matter" and "Shut Down Trump and the RNC" ahead of the Republican National Convention in Cleveland, Ohio, U.S. July 17, 2016. REUTERS/Shannon Stapleton

A police officer holds his weapon in a vehicle as they monitor a march by various groups, including "Black Lives Matter" and "Shut Down Trump and the RNC" ahead of the Republican National Convention in Cleveland, Ohio, U.S. July 17, 2016. REUTERS/Shannon Stapleton

Demonstrators march by police during the Shut Down Trump & the RNC