Who Is That Masked Man at the British Museum?

One day after Michael Kimmelman published a puzzling article that almost seemed to be inviting a terrorist attack on Picasso‘s “Guernica,” a “terracotta eco-warrior” managed to put face masks on members of the ancient Chinese battalion now on display at the British Museum.
The Daily Mail, which obtained photos of the muzzled sentinels, reports:
The man jumped barriers to place the masks bearing the slogan “CO2 emission polluter” on two of the life-sized figures to highlight China’s poor pollution record.
At least now CultureGrrl has fulfilled the mandate [via] for all bloggers to post about environmental issues today. Speaking of which, do you think that China’s air will be safe enough for all those 2008 Olympics athletes?
As for Kimmelman’s article, how are we to regard comments such as these:
The picture [“Guernica”] presides over a big gallery of related Picassos, each a target, I suppose, if you adopt the mindset that terrorists, and those who would exploit terrorism, like to foster [huh?]….Standing before it, you can almost imagine that it has, historically speaking, passed beyond harm—that to attack it now would only make the picture a martyr, that it’s indestructible. Of course it’s not.
That almost sounds like a dare. Obviously, it was not meant that way. But what exactly is the point of singling out this picture as an ideal terrorist target (which, in any event, it isn’t)?