I'm not American and maybe it's none of my business, but I thought I'd throw in my opinion (for what it's worth.)

Just because the constitution gives citizens a particular right doesn't mean that right can't be limited. Most laws are a limitation on people's rights (often rights guaranteed in a constitution), but they help keep society in one piece so they're accepted.

I'd compare guns to cars to be honest. They are things that can be useful and can be dangerous. (There are plenty of people who would argue that guns are more dangerous and less useful than cars, but I can't see that washing in America.) Some people just want them to show off, and that's not a problem except when those people show off by endangering themselves and other people.

It strikes me that anyone who wants to own a gun should be able to show that they know how to use it and store it safely. If they are caught using it in a reckless way, it should be taken away from them in much the way people's driving licences are taken away if they drink and drive etc...