It's interesting to note that Chipolte's response wasn't necessarily in response to people in their restaurant at the time complaining. From the CNN Money article...
As I said before, social media will be the end of this country.
An activist group called "Moms Demand Action for Gun Sense in America" began a Twitter campaign on Monday against customers bringing guns into Chipotle.
The group, which was formed after the mass shooting of children in Sandy Hook, posted a photograph on its Twitter account of two guys carrying guns inside a Chipotle (CMG) restaurant. The Twitter handle @MomsDemand asked customers to tell Chipotle that such images are not "acceptable," and that "we won't feed our kids next to armed gunmen."
Chipotle response came within 24 hours of the campaign.
On Tuesday, the group tweeted: WE WON! @ChipotleTweets says #BurritosNotBullets No more guns in stores.
As I said before, social media will be the end of this country.