Parmandur
Book-Friend, he/him
Well, there have been studies about just that, but they have nothing to do with this particular case and are way outside the appropriate subject matter for this forum, bit Googling "Stand Your Ground" or "Castle Doctrine" and various political words produces informative reading.The problem here is that we don't know if there was forced entry.
Overall, though, it's a pretty sad way of looking at the world. The fraction of the world that thinks that there is a public safety concern that needs to be addressed by a Castle Doctrine is not large enough to be consequential. But they do think the way they do for a reason. I can't imagine what that reason is, but it's worth asking.