From the video it's about Texas where firearms are allowed with a legislation, the title is misleading.

But worldwide it is illegal!

And my personnal stance on this is : NO! I disagree with firearms being sold to people, this open access to firearms to responsable and at the same time to irresponsable people, it makes the danger of crime and retaliation on a whole other level. I prefer to live in a community where no one has fire arms than a community where criminals have firearms and I'm allowed to buy one to defend myself, it's still to risky! not to mention the accidents possibility