"Every man in Switzerland has a gun for national defense, yet the murder rate is very low. Why?"

Maybe because it's for "National Defense" rather than personal defense. The reason for carrying a concealed weapon I hear most in the US is for personal protection against, I presume, other people carrying concealed weapons. Now if no one carried concealed weapons.....well you get the picture. I'm Canadian and I have never, ever in my sixty three years known or heard of anyone to carry a concealed weapon, yet even here on Mudcat several American members have said they have permits to carry. This is, frankly, beyond my comprehension.