When a group of kids decided to do something nice for their fellow citizens on the anniversary of the World Trade Center attacks, they asked for permission first. A flash mob singing “God Bless America” sounded like a grand idea to the head decision-makers at Wal-Mart at first, but the more they thought about it, they realized it could become a safety issue to an already-jumpy crowd of shoppers. So naturally, they shut down the flash mob and called the cops when the group took their act outside the store.

The company is now apologizing for the way the situation was handled, but the kids and several others are still upset. However, the company issued a statement saying they would rectify the problem.

“We regret this happened and apologize to the students, parents, and the school for this experience. Unfortunately this was a situation of miscommunication and should have been handled differently. We are inviting the kids back to the store to help honor the victims and fallen heroes,” the statement said.