That said, I think people need to recognize that in many aspects what's happening is connected to societal issues that gun control and gun regulations will have very little impact on - remember, even in Japan somebody could make some kind of battery ignited home-made shotgun and kill Shinzo Abe.
... having said that, isn't it funny just how much gun violence there is in the one developed country that allows for open slather gun ownership. It's like, yes, you can never stop a determined person from doing violence, but by reducing the availability and power of fire arms you do stop a lot of fools from doing "mass shooter" levels of damage.