Too different issues. Someone smashing windows is completely unrelated to "self defense". Shooting them would not be an "exception", it would be unrelated. Legal or illegal, it is in no way related to "self defense".
You might intervene. You might yell over at the guy, go running to the neighbors house if they are or might be home, you might end up confronting the guy and end in a self defense shooting for one reason or another but shooting him for breaking windows in not "self defense".
Still happily answering to the call-sign Peetza.
You do not HAVE a soul. You ARE a soul. You HAVE a body.
He is no fool who gives what he can not keep to gain what he can not lose.
-Jim Eliott, paraphrasing Philip Henry.