National Chief Phil Fontaine has called for a united and peaceful Day of Action, but a minority group of militant protesters in Ontario have already set up blockades.
The group of about 40 Mohawks, urged on by leader Shawn Brant, parked a school bus and truck across secondary Highway 2 near Deseronto, roughly 100 kilometres east of Toronto.
They then used jumper cables to trigger crossing barriers at a main CR Rail line, and planned to block a section of Highway 401 when it was safe.
"We're not going to have firearms on the line, but we certainly have ample resources available if the situation should arise," said Brant, who is acting without the support of his own band council.
On Thursday, Fontaine urged groups to choose negotiation over conflict in their push for better living conditions.
First Nations leaders have promised to ensure public safety and security during Friday's protests, but there had been no reassurances about highway or railway blockades.
"We're about respect and dignity. We absolutely believe that the most effective way to transform Canada into the country that it deserves to be is at the table, in negotiations with governments," Fontaine told CTV's Mike Duffy Live on Thursday.
"And we've been able to demonstrate that we can actually bring about change with that type of approach."
Speaking to reporters earlier in Ottawa, Fontaine said June 29 should be a peaceful and united day nationwide to express "an urgent call to address the crisis situation in our communities."
Citing poor-water quality, lack of education and staggering poverty, Fontaine said the frustrations of aboriginal people are high, but change can only come through talks with the government.
"Tomorrow, the real story will not be about conflict, it will be about the many events taking place across the country, which combined make for one of the largest rallies ever held in Canada," he said.
Fontaine will be joined in Ottawa for a march of solidarity by Liberal Leader Stephane Dion, NDP Leader Jack Layton and Canadian Auto Workers President Buzz Hargrove.
"First Nations have a strong interest in ensuring public safety and security during the various events that will occur tomorrow," Fontaine said.
Politicians urge peace
Canada's premiers and territorial leaders issued a joint statement Thursday morning urging organizers and protestors to demonstrate peacefully.
"Together with other Canadians, we respect the right of Canada's First Nations leadership to organize a National Day of Action. At the same time, we ask that leaders ensure that all actions are peaceful and law-abiding," the statement read.
"Our hope is that history records June 29 as a day of promise, one that affirms our shared goal of building a higher quality of life for First Nations people and a stronger Canada for all."
Aboriginal leaders across the country echoed the call for peaceful marches and discouraged confrontations for fear that public support of aboriginal issues should weaken.
Concerns remain some communities may set up illegal protests such as highway and railway blockades.
The leaders added they hope Friday builds bridges between Aboriginal and non-Aboriginal people.
"This day is an opportunity to strengthen public knowledge and understanding of First Nations culture, history, traditions and aspirations, and to rededicate ourselves to the work ahead in forging new and meaningful relationships," reads the premiers' statement.
With files from the Canadian Press
