Andrew Gelman has a really weird post on modern art that somehow manages to tie in Warhol, Karl Popper and Al Qaeda. It is built around a bizarre op-ed by some art history professor but, though Gelman quotes her at length, he doesn't bother to rebut statements like "Art has also failed miserably at its secondary goal of protecting us from terrorism."
I don't know how Gelman could let something this get past him, particularly given his background as an art historian.
p.s. Before commenting on this or on Gelman's piece, give some thought to the title of this post.