The local and federal governments have resorted to significant measures: barricading the downtown core behind a massive galvanised perimeter fence, erecting checkpoints with x-rays, uprooting trees that police say could be used by demonstrators, and converting a sound stage into a massive temporary detention facility in preparation for mass arrests of protesters. But with Canadian soldiers, snipers, commandos and police tactical units representing the sharp end of a security budget that is poised to top $1bn, the most significant threat to business as usual for the summit may turn out to be far-flung rural blockades enacted by Canada’s long suffering native communities.