The indubitable Snarky wrote:
"Would you wish you were carrying a gun if you and your family were in that church?"
Even if I owned a gun, the last place I would carry it would be to church. I don't think Jesus would like guns in churches. 
And if you were carrying a handgun in a church, and a guy with an AR or AK dressed like a commando came in blasting, I think you would be too busy hiding your ass than trying to take him out. But wait! If all churchgoers were to carry AR's or AK's then we could be safe. That's it! That's the ticket!