Shredding Banksy - The Challenge of Art & Design

In shredding a work that had just been bought for £1m Banksy challenges us to question the value of art. Is a work of art worth the money that is paid for it? In the case of “Girl with a Balloon”, is it now worth more because it is the first artwork to be ‘created’ during a live auction? Some would say that the shredding of the work is the art. While others have said that Banksy had no right to destroy the work after it had been purchased.