Yes it can. Our govs have broken about a gazillion of our charter rights during this lockdown. We have freedom of peaceful assembly, for instance. So banning gatherings of any amount of people is unconstitutional, so is fining people for it. Banning people from public property, like parks. We have mobility rights, freedom to leave and enter Canada, freedom to move between provinces etc.
None of those rights have been broken during this. You can still enter and leave Canada as a Canadian, for example (with reasonable restrictions). You can still assemble, while observing social distancing rules. I'll also point out that none of the restrictions have been challenged in court on Charter grounds.
On a separate note, does any government want to challenge this type of mass protest in such a way? It would be political suicide, not to mention the fact that it would simply result in a bigger protest.