First off, it's affects, not effects.
Point? (And I kind of file like you should be pointing to ToonyMan here, since he was the one who wrote that. I simply responded working off the same definitions. Hell, I was even considering looking it up and emphasizing it if it was wrong. But then I realized that was stupid, and didn't add to the conversation. So, good job.)
Fine. Toony? It's affects. Carry on.
Second, legal carry does not dictate legal use. Someone can use a legally purchased, legally owned firearm to commit an illegal act. IIRC, the dude down in Arizona who gunned down Rep. Giffords and her staff legally purchased his weapons.
Point?
Do I actually have to explain this one? You stated that the right of legal carry in a public place has absolutely no effect on anyone else, because shooting someone is illegal. I'm pointing out that B does not necessarily follow A. Legal carry does not guarantee legal use.
Hypothetical situation: Person A goes to the park legally armed. Gets into a heated argument with person B. Shoots person B, not premeditated. If weapons were barred from the park, this would not have occurred. Ergo, a crime occurred which would have been prevented by a no-carry law.
I realize that this is not a common situation, and this one has been tailored to fit the point, but the fact remains that you cannot argue that an individual's right to carry has no bearing on the public around them, or that only people who are already criminals shoot other people.
Third, lest we forget that this has real-world implications, somebody went trigger-happy at a Nevada IHOP just a little while ago. 3 dead, 9 wounded + the shooter (self-inflicted). At least two of the dead were military. Was the gun legally purchased? Were the dead and wounded armed? Would it have made a difference? Is there any way to actually tell?
Point?
My point is that this isn't some abstract, pie-in-the-sky debate. This shit matters, because people get shot in this country every single day. In many cases, laws wouldn't have helped. But certainly there are a significant portion that deserve to be examined because they could have been prevented. More stringent background checks. Waiting periods. A unified, computerized database system.
Hell, I have to wait longer to adopt a fucking
puppy and take it home than I do to purchase a .44 Magnum and take it home.