Self defense

This is the twenty first century ,  there is a freedom in the world . Everyone on this has his own life , he can do what ever he want . He can go anywhere at anytime . But there are also so many bad people in this world , who rub ,kill , and kidnap the other people just for the money . So the self defense is very important for every people . In this case the stun gun will help you people . Stun gun is small electrical gun which reduce the electrical wave from it and when it teaches the human body then the human can't be able to move . So if you people have a stun gun with you then you people can be safe from those criminal .