Self Defense Weapon

I watched news on the tv, internet, and newspapers. Why this years criminal action has increased. Criminal in any case, for example, threats, kidnapping, robbery, fraud, or abuse for no reason. We do not know, when the criminal action happened. Therefore, I think, is there any self defense weapons that I can have, and I look for it on google. Then I found it, and apparently self defense weapons is already exist. Self defense weapons are various, such as stun guns, pepper sprays, hidden cameras, etc. And the shapes are various also, so people will not know do we have a self defense weapon or not. It's very interesting is not it?. I already have one, and now I feel safe when going to anywhere, because I already have a self defense weapon.