Scratching graffiti: excusable "grief" or vandalism?
You know, this is why I think government ought to just get out of the memorial business and leave it to the citizens. When the 9/11 crash site in Pennsylvania was a makeshift folk art mish mash of pictures and genuine, heart-felt expression it was way, way better than it is now. The same is true for the memorial that was at the twin towers. Government only gets involved in these things because politicians want to put feathers in their caps, and provide jobs for architects and construction workers. But left on their own, people will do very amazing things that may not look "professional" but have much more emotional impact.
Besides, if something is worth remembering, there will be no stopping people from leaving remembrances. Look at all those crosses we see by the highways every day.