Modern states do not allow the use of deadly force to defend chattel (personal property). This would include New York and California. Other states with laws closer to the common law allow it. Correct me if I'm wrong, but I think Nevada allows for deadly force to retake chattel.
Given the above scenario, in a modern state like California or New York you cannot use deadly force. Now, if the suspect told you to pound sand and then approached in a manner a reasonably prudent person would interpret as threatening to life and body, then it becomes a matter of self-defense.
However, if the suspect says, "pound sand," and then walks away, in the more modern states, the best you can do is take pictures, call 9-11 and hope the popo captures the miscreants.
OK you pull on a guy breaking into your car and tell him to get on the ground. He tells you to pound sand. Now what?? Its not as simple as it sounds. Pulling a weapon is a very serious thing.
Given the above scenario, in a modern state like California or New York you cannot use deadly force. Now, if the suspect told you to pound sand and then approached in a manner a reasonably prudent person would interpret as threatening to life and body, then it becomes a matter of self-defense.
However, if the suspect says, "pound sand," and then walks away, in the more modern states, the best you can do is take pictures, call 9-11 and hope the popo captures the miscreants.