It's a law that if someone is trying to break into you're place. You can shoot them legally dead called Self Defense. They're is also the "Stand you're ground" where in public if you feel a threat. You can defend yourself with being reasonable force. The problem was the man shot dead two young popular teens. I doubt it'd get half as much attention. If the kids were not, young and attractive.
I can understand shooting the guy. That's yanking the trigger once. But pulling a gun on a female. That's cold blooded to shoot them down. Obviously they're is more to this story that's left out of the details when they interviewed him.