Paraphrased for brevity and clarity:
Me: Not that human rights should ever be negotiable, but if gun-control were really effective at saving lives, why is the murder rate so high in Chicago, which has some of the strictest gun control in the nation?
Her: The crime in Chicago is high because of guns brought in from Indianapolis!
Me: Well, if guns are the problem, and Indianapolis is the SOURCE of the guns, shouldn’t the crime rate be higher in Indianapolis?
Her: Concealed carry is a recipe for disaster! Can you imagine a hundred guns in a movie theater?
Me: I know for a fact that I can distinguish and hit a man-sized target in less light than a movie screen and floor lighting provide.
Her: You are assuming that you are the only one with a gun, or that everyone else is as good you.
Me: No, I’m just not assuming that tyrants should be given the power to deny other human beings the basic human right of self defense, because those human beings are somehow so staggeringly incompetent that it would be safer to force them sit defenseless in front of a mass-murderer who is already shooting people.