A National Aboriginal Day march is expected to cause traffic disruptions downtown on Friday afternoon.
The march is meant to raise awareness about sovereignty and treaty rights.
The demonstrators will depart from Victoria Island at 12:30 p.m., march south on the Portage Bridge, and then march east on Wellington Street to Parliament Hill.
The demonstrators anticipate being clear of the streets by 1 p.m.
Police advise commuters to use alternate routes.