The Square Often, I find performance art annoying. Well, who doesn't? However, there is one piece, thanks to the glories of the Internets, that I wholeheartedly approve of, and had me laughing out loud. Lilly McElroy is a Chicago-based artist whose work ranges from lying down in public places in a nightgown to literally throwing herself at men. My favorite, though, is a work called "The Square." In it, she marks off a square with chalk on a busy sidewalk, and then defends it from all comers, blocking people from walking across.