My understanding is that you don't have to know specifically who it is you're contacting. You don't have to know the identity of the person who you're contacting. You can counsel generally to a group of people. One particular example in that regard might be.... You may recall the decision in the Mugesera case in which Mr. Mugesera had made statements to a large crowd, referring to Tutsis as cockroaches, for example. There was a court case to have him deported from Canada to face trial in Rwanda, although I may have some of those facts incorrect. Essentially the Supreme Court of Canada held that in the circumstances, that could be considered counselling to commit murder, even though his speech was to a large group of people.
On April 25th, 2018. See this statement in context.