There are really two stars of the new documentary "Ai Weiwei: Never Sorry"--the artist himself, and the Internet. The two are inseparable in the film, which both documents the life story of the man who has become one of China's most creative and courageous dissidents, and shows how he has maneuvered through the cracks in China's vast system of social control by using social media to reach a global and local audience. Weiwei himself is an amazing story. His father was the poet Ai Qing, a Chinese revolutionary and romantic who was punished during Mao's Cultural Revolution and sent with his wife to a rural labor camp in 1958. Weiwei spent his first 16 years there, and then went to the...