Prominent Chinese artist 's work vandalized in Miami gallery . The art piece was a portrait of the late North Korean leader Kim Jong Il and his wife Ri Sol Ju -- who is also known as Yo-jong -- painted by South Korea's famous pop star Rain, according Ai has previously destroyed vases as part of his work . But he says a line needs to be drawn when work is damaged as part of a protest .
Prominent Chinese artist 's work vandalized in Miami gallery . Defendant says he destroyed Ai Weiwei 's $ 1 million vase as `` a spontaneous protest '' Ai has previously destroyed vases as part of his work . But he says a line needs to be drawn when work is damaged as part of a protest .