Until some nut case wants to hurt a mother and child and someone with a concealed carry comes to the rescue.
Check it out:

Moms Demand Action, a gun-control advocacy group funded by former New York Mayor Michael Bloomberg, want guns out of the grocery store. The group has challenged the nation’s largest supermarket retailer, Kroger Co., to ban open-carry policies in all of their 2,640 locations across America.

The petition states that grocery stores are the last place mothers with their children want to see someone openly carrying a gun. One advocate even tweeted that she has instructed her kids to run if they see a man with a gun (question: does this mean they run from police officers?).