I live near Montréal and I never heard about it except from US sources. It's weird that it doesn't seem to be a big deal. Also I'm never sure if the sources are accurate or if it's from some conspiracy nuts.
Why would you hear about it from Canadian sources, if they're getting gagged?
If I understand correctly, the victims are getting gagged. Not the news medias. They can publish stuff and they did in the past, like that The Fifth Estate thing. So I could have heard about it but I didn't. From the news or from people. Maybe the news don't talk about it often enough or that the population don't care.