And you know that how? I'm not disputing that the memorial is a solemn, even sacred, site, but there is too little information to conclude that it was a deliberate act. If it was, it was an incredibly wimpy one -- scattered splotches at ankle-height. You'd think that someone who wanted to make a statement would do it above a mumble.
In the first photo on the original post, there is bare earth and what appears to be a gap between the soil and the top of the granite slabs. That suggests to me that the grass atop the wall was recently edged. A gas-powered edger leaking oil, or fuel, could fit the pattern of the spots observed, as far as I can tell from the photos.
All I'm saying is that it's premature -- though it's a favorite FR pastime -- to assume that someone did it on purpose, and from there to guess why and then follow up to what should be done to them and how we can tell al Qaeda was behind it.
If it turns out to be something innocent, the folks who assumed have a choice of looking silly, or of denying the evidence and insisting there's some kind of cover-up, and thereby looking sillier.
A gas-powered edger leaking oil, or fuel, could fit the pattern of the spots observed, as far as I can tell from the photos.
Do you really want to blame some Mexican gardener for this in front of this crowd?
Granted there are weak postulations on this thread but your's are the weakest of all. Almost a defense.
My first impression, given the height of the deposits, was that maybe someone had walked their dog there and allowed / encouraged it to urinate on the monument.
http://www.google.com/search?hl=en&q=Oily+urine