I personally think we leave it tagged with a symbol of Islam.
There is a scorched spot on American soil where many people died. Every time we look at it, we should be reminded who is responsible.
I know this response won't be met with agreement, but it's the way I see it every time a photo of it is presented.
"Look what they did, this is their goal, their vision... to kill us all".
If these people had their way, every one of us would end up in a burning hole on our own land. Don't forget it.