corr: assault AND battery.
under Self-defense outside (not Castle) in public, ...
In a physical confrontation, self defense typically allows a person who reasonably believes he is about to be hit to defend himself. However, if you've already been hit, and the person who hit you indicates by words or actions that he is not going to hit you again, self defense generally does not allow you to hit that person back. Self defense may only be invoked to prevent further harm, not to retaliate against a person who has already harmed you.
Self defense also only allows for a proportional response. This means that if someone hits you with his fist, you may not necessarily be justified in pulling out a gun and shooting him.
Generally, deadly force may only be used in circumstances in which the person using deadly force has a reasonable fear of losing his or her life.