Worth sending to your anti friends to get the conversation started. Don't be afraid to engage in a battle of wits regarding gun control; gunnies have facts and history on their side. Be sure to do your homework so you know what your opponent will say.
When you divide the number of crimes or homicides by the sheer number of actual guns owned, you'll see that the percentage of firearms used in these instances are so minute to be almost statistical noise.
look up the numbers for yourself. Is .000374% really worth trampling on everyone's rights? And what for? To get that number to .000369%? In economic terms, the ROI simply isn't worth it. Besides, guns are used by the citizenry to prevent crimes in upwards of 2 million times a year
but what about this lady? How many times do you hear of jealous ex's who can't take "No" for an answer killing out of jealousy? That 24 hours could mean life and death for some people, and it's quite common. VT wasn't as much tragic as it was sensationalized. For every Cho, there are thousands of these types of stories. In your quixotic effort to combat .000374%, you harm the many that truly do need a gun right then and there.
There are also some great things in the comments.