Now, it seems, a Washington DC Court is saying guns are for militias only.
The Wikipedia quote says:
A well regulated militia being necessary to the security of a free State, the right of the People to keep and bear arms, shall not be infringed.
Which has always, to me, said that you can bear arms in the UK as long as you're forming a militia. I've never been able to work out how it reads as "anyone may carry a gun" unless you're dealing in Pratchett-esque "Militia Futures" - militias in potential - where you could form a militia, therefore you'll carry a gun.
If only this would spread further across America then the whole country (and possibly the world) might be a safer place