maybe it is all fake.....there are some very convincing arguments that it is just an elaborate hoax http://youtu.be/sIoPjfLnEFY
maybe the canadians decided they don't want to lie to their citizens and that is why they don't have these "mass shootings"
what do you know other than what you see on tv?
the same tv that can and does depict things so realistically it looks like they filmed it live
heck jurassic park could make the case that dinosaurs are real, who are we to say they aren't