Blocking a street for many days is typically considered illegal.
I'm not saying that they should be prevented from protesting (and I strongly disagree with that protest), just answering the question as to why this might be illegal.
IIRC, bill C-51 defined this as an act of terrorism. Wonder how that's going to play out. When it's indigenous people blocking a pipeline, the SWAT teams come out.
Do you not think there are laws everywhere about blocking traffic? When you reach a destination in your car, do you just park in the middle of the street?
I don't, but I think of it as normal, because commercial vehicles including delivery trucks do it all day every day in the area that I live in. They do it in the right lane of city streets that have two lanes each way, and they do it on streets where you have to cross over a double yellow to get around.
Aside from that, I have lived in the approximate center of a moderate sized city (metro area of ~1 million) and noticed that there are occasional, authorized events that take over and prevent any and all traffic. Bicycle races for instance.
Assuming one isn't vehemently against a protest in the first place, debating blocking traffic boils down to the technical requirements for permits and coordination with authorities. It's only a shocking breakdown of public order if people strongly oppose the underlying cause.
I'm asking you since you brought it up. And the question was not a hypothetical about someone parking in the middle of the street but specifics about what laws have specific people broken here.
I'm not saying that they should be prevented from protesting (and I strongly disagree with that protest), just answering the question as to why this might be illegal.