Vanessa, I don't have any problem with gun control and generally favor it for large cities. There should certainly be steps taken to ensure that people who have mental illness do not have a gun.
Even in a city like NY people have carry permits, though they are hard to come by. I have one.
What the article I quoted is saying is that when you completely take guns away from law abiding citizens, you insure that only miscreants and lunatics will have them. To sum up, take some guns away, don't take all guns away. And if you take all guns away, ensure there is someone to protect people.