Correct me if I have this wrong; a fellow American (in Florida) can shoot another if she or she feels their life is threatened then evoke “stand your ground” and the police just walk away? What is the role of the police in such circumstances?
A person in
many countries can kill another person and say whatever they think will keep them out of trouble. Sometimes they even get away with it.
That aside, the basic premise of self defense in America is similar to English common law, where (as Dryden observed) the right to protect one's self is 'Nature's eldest law'.
Over the years the courts have established that you can use proportionate force to protect life and limb.
Guns have complicated the matter on several fronts... racial, political, and social. The media hasn't helped either.
Suffice it to say that politicians sought to score points by passing modifications that gave more leeway to taking care of 'bad guys' without bothering to ask for their guild card,
or without running away.
The media slapped sensationalized labels on these statutes such as 'Make my Day', and 'Stand Your Ground'.
And that does create the prospect of a liar getting away with a murder through a
contrived claim of self defense.
Before, the same murderer might have had to work harder to fabricate the claim that 'It was an accident', instead of 'It was self defense'.
Note that this current case isn't sufficiently developed to know what happened here, and the current claim by GZ that he was attacked from behind by surpriose means that there literally was no 'ground' to stand.. he was just fighting for his life (according to him).