Well, I've read this whole thread and there have been some good points on the side of the 2nd, and not so many against.
First, murders are not caused by guns. People have been killed during crimes, over women, and accidentally long before guns were around. We are great at finding ways to kill each other. What happened in Arizona was terrible, but that guy would have done something similar even without a gun. What if he had shown up without a gun, so had driven his SUV through the crowd with the throttle floored? Would the result have been better? Maybe if a law abiding, legal gun owner had been there, and armed, he wouldnt have shot so many people. I would like to think that if I had been there, and armed, he wouldn't have gotten off near as many shots.
On the subject of those shootings, I did hear in the news that his gun was "a legally purchased handgun" but what I didn't hear was that it was legally purchased by him.
I don't know all of the statistics on guns and gun owners, but I do know this. Concealed carry permit holders are one of the most law abiding groups of people in the country. Also, in places where gun ownership has been banned, gun violence and crime has gone up. Even criminals agree that they are more likely to commit crimes where it's illegal for citizens to have guns.
I was brought up in a very anti-gun household. Most would consider me a liberal, though that label doesn't really fit me, especially with the current liberal agenda. Like most young boys, I had a fascination with guns and blowing things up. Let's face it, if explosions weren't so cool, they wouldn't spend so much money to fill our movies with them. I started shooting late in life. A good friend of mine has had a carry permit for 15 years, and as time went on, I thought it would be a good idea to learn how to shoot, and operate a gun. Unlike some here, I don't really trust the government, and I don't believe the police can protect me and mine, even if they wanted to. What do you think would happen if the power grid went down for even a week. I'll tell you what. People would go nuts, and a certain percentage would take what they want, and I'm not talking about just "things". No power, food would run out, people would be fighting for their lives. I have thought about these things, and I knew I would want to protect my family, but I still wouldn't be comfortable picking up a gun because of my upbringing. Then the news hit about the home invasion in Cheshire, CT. That's only 45 minutes from my house. It made national news because the scum who did it beat a man and killed his wife and 2 daughters. Next time I was at my friend's house, he got out one of his pistols and I started learning. That was 3 years, 5 guns and about 20,000 rounds ago. I now have my own carry permit, which is needed in CT to buy a handgun, and am competent and confident that I can protect myself and my daughter if needed. I also know that if things get bad, I can protect myself, and get game if needed.
You may think I don't need a gun to protect myself, and I hope I never do, but I can't count on anyone else so I'll keep my guns. One more thing for those who think the government, or the police will protect you. Here's a little known fact that everyone should know. The police are not required to protect you. I'll say it again. The police are not required to protect you from anybody. That means that if a bad guy breaks into your house, and kills your wife and you call the police and tell them, and tell them that your kids are next, they don't even have to show up!! It's been proven in court many times. People have called 911 repeatedly while people were being raped and killed, sometimes for hours, and the cops never came. When the survivors tried to sue, they were told that the police are not required to show up. Tell 'em you're armed and will use deadly force if needed, and I bet they'll come...go figure.
The main reason for the 2nd in our constitution is so the people can protect themselves against tyranny from the government and those in power. You can argue that citizens are so outgunned that it makes no difference, but that's assuming that all the grunts in the military would go along with firing on US citizens. I don't think that's the case. I don't see our soldiers supporting a government that would do that, so I think it would be much more even than you might think. I think a more probable scenario would be a breakdown in social services, like power, transportation and commerce.