Sure.
Getting back to your question about CSIS, for an investigation to be initiated for foreign interference, it has to be very clearly presented or seen as detrimental to the interests of Canadians and Canada, and of a clandestine or deceptive nature.
Any activity that constitutes lawful advocacy, protest or dissent is specifically excluded from investigation, but it's also why it has been so difficult for government and for certain agencies to present a threat from foreign interference. It's because it is so complex and and can be misconstrued as legitimate discussion or protest.