Trying to identify a scifi short story, possibly from the golden age, where all citizens carry sidearm weapons. Everyone is super-polite because it is legal and accepted to challenge another citizen to a duel to the death at any perceived slight or unresolvable dispute. Anyone not carrying a sidearm (e.g. children, the elderly, infirm, pacifists etc.) not therefore being able to defend themselves have to defer utterly to true citizens. Any ideas?
It's a novel rather than a short story, but that sounds exactly like Beyond this Horizon by Robert Heinlein.
This novel is also the source of the quote "An armed society is a polite society"