Aboriginals and their supporters are blocking bridges, slowing traffic on highways and stalling a rail line as the Idle No More movement flexes its public muscles in a show of solidarity.
Hundreds are gathered at the Ambassador Bridge in Windsor, Ont., threatening to snarl the busiest Canada-U.S. border-crossing point.
A handful of flag-waving demonstrators have also stopped a train on a rail line an hour west of Winnipeg.
Marchers temporarily diverted traffic from a main bridge in Miramichi, the biggest city in northern New Brunswick.
The Algonquins of Barriere Lake have slowed traffic along Highway 117 in Quebec, about two hours northeast of Ottawa.
In northern Alberta, members of the Lubicon Lake Nation are planning information checkpoints on roads through the oilsands region.