“What is this logic that says, oh, it wasnt in his house - it was just in his garage, so therefore the owner should not have defended himself?
Unfortunately, that is the legal STANDARD for the police. They can go into a detached garage, your backyard or any of your property to check out anything they find suspicious. Without a warrant. Just not into your domicile.
Not true in my state Mariner. Only a game warden can enter your property without a warrant and conduct a search outside your domicile.
In our case, they may enter an open gate but it may be locked when they want to leave.
“They can go into a detached garage, your backyard or any of your property to check out anything they find suspicious. Without a warrant. Just not into your domicile.”
You might want to consult a lawyer.