An autobiography in pictures: photographs taken by Ai Weiwei that capture his emergence as the uniquely provocative artist that he is today. Ai Weiwei: Beijing Photographs 1993-2003 is an autobiography in pictures. Ai Weiwei is China's most celebrated contemporary artist, and its most outspoken domestic critic. In April 2011, when Ai disappeared into police custody for three months, he quickly became the art world's most famous missing person. Since...