You miss understood. I didn't mean the Wall itself was spray painted last week. At the anti-war demonstration on Sunday I think it was several protesters attempted to spray paint various monuments, statues and buildings. Don't know if they actually succeeded in doing so but the cans were definitely there, out, and ready for use.
Sorry to have misread what you wrote. I just hope I was the only one. Indeed, as you note, there were other incidents including a minor spray painting of some of the steps to the US Capitol. That was cleaned immediately with no lasting damage. Never-the-less that is reprehensible conduct.