I completely agree with my colleague Mubin Shaikh.
The most visible groups aren't necessarily the ones we should worry about most. The most concerning ones are the semi-clandestine and fully clandestine groups whose methods and messages are largely borrowed from groups in the United States.
As a researcher, I can't necessarily name the groups, because I haven't met with them; the ethical considerations were much too significant. However, these groups are active on social media, and in other forums, and are known to be organizing in a number of provinces.