If we outlaw death-rays, only Ming of Mongo will have death-rays

When my sister discovered that I had joined the NRA, she declared that I must be insane. I asked her how a granny might defend herself if she were mugged by three men twice her size: my sister replied that the granny could know martial arts, and judo-chop them. I assume her evidence at to my lack of mental competence was that I did not regard ninja granny as a viable option in the grim situation of someone faced with a violent crime.

For an article on the relative merits between martial arts and fire arms, see this:
http://www.a-human-right.com/martial.html