Really? Then I guess I must have been raised in a mafia family. I was exposed to guns at 3, given one and taught to shoot at 4 yet as of now I haven't been arrested or indited for anything... You have to remember that in different parts of the country people have different norms. I don't assume someone that doesn't own a gun or was never exposed to one is in a bad social group (called liberals if you will)... I just assume they are probably going to be victims... but if he makes you feel better to think people exposed to guns are all members of some nefarious gang then I think is really a reflection of your own narrow believes than anything else....
5. I find it more scary you think a 3 year old should know what a real gun is. As I have said, my kids will not be around real guns in a domestic setting unless they fall in line with a very bad social group, which is unlikely where we live.
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But I would offer one bit of advice for you. I would suggest that it is never too early to teach a kid about guns. Frankly taking them shooting at 4 is probably a bit too early... but when some kid gets hold of a gun and accidentally shoots someone it is not because the kid had been taught about guns, it is because the kid wasn't taught about them... so do your kids a favor and teach them early because you never know when they might happen upon one.