Storch:
I am not sure if you are right as to whether Martin would have inevitably been acquitted in a US Court - I'm sure it would have been a lot more likely. I found this website:
http://www.floridatoday.com/sections/emergency/force.htmwhich sets out the rules of self defence quite simply. It gives the following cautionary tale - perhaps the american version of Mr Martin:
Example: At a convenience store gas pump, a man got into an argument with other customers who were drinking heavily. Three of them approached the man and beat on him while he stood hunched in the open doorway of his car. Armed with a pocket knife, he resorted to stabbing his attackers, killing one of them.
This man was convicted of manslaughter because he pulled the knife before his attack began. This showed that he anticipated the attack and chose to pull a knife and stand his ground instead of getting in his car and leaving.
The court upheld his conviction ...
It appears that the general duty in the US (except where the castle doctrine applies) is that when confronted with actual or potential deadly force you must retreat if it is safe to do so. If you use deadly force when you have the option of retreating, you are not entitled to claim self defence.
Toad: If memory serves, the burglar who was shot in the Martin case dropped his claim for damages and is now back in prison after having been caught committing some other crime. I don't think the issue is whether the career criminal deserved to live or die. I think the issue is what, if any, sanction should be taken against Mr Martin for shooting the burglar.
Ravs