[ applause ] >> seconds after it was sold for more than $1.4 million three years ago at sotheby's, the artwork partially shredded itself, shocking onlookers. now sotheby's plans to sell it again. >> banksy exists to kind of really sort of undermine institutions, and i think it's fair to say that on that night, sotheby's was banksy. obviously we had absolutely no preconception as to what was going to happen. but we managed to have a modicum of order. we sold the picture. but then again, of course, almost overnight this picture became just an icon. >> banksy previously implied on social media that a shredder concealed in the artwork's frame had malfunctioned, keeping the work from falling like scraps to the floor. it's unclear whether this was all a stunt, though. thanks for spending part of your day with me.