It is a slippery state, but given the risks of terrorism and what crimes one can get away with in a niqaabi burqa/abaya, and the evidence that these clothes HAVE BEEN used in the past deviously, it is worth bringing a ban for the sake of safety, if nothing else. I'm sure no one here would want to be blown up by a bomb that was hidding in a burqa, nor would anywone want terrorist activities going on under a niqaab where you can't even identify a person. It can be very dangerous.
Likewise, female genital mutilation is a practice in some African societies - is it ok for them to be practiced under Canadian Law?
Canada, and other western countries, have the ability to ban barbaric practices. You want to continue wearing the niqaab, then fine - move to a country that will permit it.
That joke of a group calling for a ban is far from making it law. I highly doubt that they'll ban it here. I don't find their (Muslim Canadian Congress') argument convincing at all. I find that the argument of those opposing the ban is a much better one. If the women themselves choose to wear that attire, it doesn't affect/bother me at all.
Having lived in Canada my whole life, there are many things that I find are a greater threat to my personal safety/health than a woman in a burqa, abaya, niqab etc. Here are a few of them:
Guns
Alcohol
Cigarettes
Cars
Bikes
unsafe building structures
collapsings bridges/overpasses
I'm sure I could come up with more things, but I'll leave it at that for now.