If you are trying to come out from the physical danger without provocation and you are assaulted, that is what the self-defense. As it is very easy to cross the line from defense into offense that’s why avoids indulging in these activities. The attacker is always in the aggressive mood that’s why if you loose your control then you can also indulge in some legal activity. So it is advisable to avoid the attacker. But if it is not possible then use the justified power on the attacker. Self defense is explained in the law and hence it is purely legal but you have to prove in the court that this is only the self defense, not the fight. If you are unable to defend yourself in the court then you can also be taken as the attacker in the court instead of victim.

At the end, anytime if you engage in violence then you have to protect yourself by not using any deadly force. There is a very narrow spectrum where you are allowed to use the deadly force. cmveletrhy.