I mean this with no offense or comedic value, but your parents must not love you a whole lot of they are willing to go to such an extreme to keep you from protecting yourself.
Would they really rather see you dead, than have the ability to protect?
One case, you could keep your weapon hidden from your parents, as well as the fact that you carry. Its deceitful, but life is more important. Brings up a saying " its better to beg forgiveness than to beg permission."