This should be told to the subject immediately, sort of like the Miranda warning.
"You have a aright to be silent and you have a right to be shot, if you don't take you hands out of your pockets."
Homeowner --"I shot him because he would not take his hands out of his pockets."
"You have a aright to be silent and you have a right to be shot, if you don't take you hands out of your pockets."
Yep, that would be a good idea. That way the perp would know what was coming if he failed to immediately comply.
Homeowner --"I shot him because he would not take his hands out of his pockets."
Works for me. ;o)