Just because you can't have 100% prevent doesn't mean you should just shrug your shoulders either. Do you think felons should be able to own firearms? Despite it being illegal, we know criminals get their hands on guns, does this mean we shouldn't have any laws in place?
Sure, I think some felons should be allowed to own guns. And of course we need laws. But we don't need laws to cover every single situation to try to protect people from doing something stupid.
OMG I'm crazy! Okay calm down.
50% of felons (according to DOJ) are nonviolent. About 1/4 of those are drug-related. Why should a convicted felony shoplifter be banned for life for owning a gun? It varies by jurisdiction, but in many places just stealing a watch could make you felon. Now, should there be some type of perhaps.. period of time in which those rights are blocked? Probably - that seems reasonable. But banned from gun ownership for life because you were holding a bag of weed in your youth? Stupidity.
Serious violent crimes? Sure. Absolutely. But don't paint all "felons" with the same brush. Treating a minor drug possession (1/4 of US states treat possession for personal use as a felony) the same as a violent rapist as far as 2A goes is unfair, particularly when the real crooks wear suits and go unpunished.
There are plenty of laws that allow certain activities to adults (drinking, smoking, gambling, etc.) that are illegal for minors and I see this as something no different. I'm not saying to take away the rights of law abiding citizens, but we're talking about an 8 year-old girl here, unless you can provide me with a compelling argument as to why she needed to be shooting that uzi, I think legislation could prevent some of the stupidity.
I never said she should be shooting that uzi. I think it's abject stupidity giving a child a full auto weapon, particularly a SMG which is difficult to control. The people who ran the range are evidently incompetent as was the instructor who paid for it with his life. As I posted elsewhere the child is the victim and frankly the parents are morons for not having more common sense. Nothing wrong with a child shooting a gun in the right environment, but a full auto SMG is not even close to sensible.
But these are the sorts of accidents that are so rare that passing legislation to prevent them is frankly a waste of time. Now the media will rally around this but ultimately there is no epidemic of 9 year olds losing control of full auto guns at ranges. The legislative effort trying to "fix" this nonexistent problem would be better focused on more worthy causes.
You say that even it could help protect someone it would be worthwhile - I disagree and here's why. It reminds me of the child in hot car incidents. Tragic? Absolutely. Preventable? Definitely. But do we need a law preventing you from leaving your child in a hot car? No that's stupid. There are existing child endangerment/etc laws that cover these situations and quite likely the parents/range in this case (not a lawyer). That is why an additional law is not needed.
I'm not worried about "loss of rights" or such as I agree children should not be firing full auto guns - I just believe passing a law against stupidity is futile. You're welcome to disagree. Think of me next time you pass someone on H1 sitting in the back of a pickup truck and ponder the oddities we legislate away vice those we protect.