Much of the posts here have been about using weapons, most specifically shooting somebody. Most specifically if you can shoot an assailant. That is certainly something to take into consideration and the justification of such a level of force should definitely be taken into consideration if one plans to prepare for the possibility of ever using such a level of force but the point of my thread was more about self defense in general not specifically self defense with weapons and the legal consequences for using self defense that doesn't involve weapons.
As adjusterjack said I should explain my question better and as I said, I should give an example. So here is my example. Lets say Im a guy in college. Im on campus and this other guy in my college touches me or tries to touch me somewhere on the body that's covered by the bathing suit. And so I punch him in the face. My question would be what legal consequences would I face? The way I see it, I should not get in trouble as that would clearly be a case of self defense. In the good old USA you're allowed to defend yourself. So for me to get in trouble in such a situation than there is clearly something wrong with our system.