Whoever takes them back needs to be fired. These are flag hating jerks. If the US flag is a symbol of Oppression, after it was flown by union soldiers in every battle of the civil war, then they need to find the flag they like and move there. I know people get slammed for saying it, but those ingrates aren't satisfied with bashing the Conderate flag. Now it's the US flag. This exposes that bashing the Confederate flag was just an excuse.
Miami should offer them a one way ticket to some other country and be done with it.
No, if they are offended, they will just be offended. I have often been offended and nobody cared - that's life.