90% of knife carry is demeaner. De meaner you look, de more people will react. Nobody is going to get upset over what they don't see. And those that somehow DO discover you have a knife on you will be less concerned if you carry a few other items is association to your peacefull purpose; an emergency whistle, flashlight, firemaking devise etc. VS a photo of the PM with a target drawn in red, Quebeca seperatist literature or an american hockey team logo'ed shirt.