Director Alison Klayman released the first trailer of her documentary “Ai Weiwei Never Sorry,” which was nearing completion even as the dissident Chinese artist was arrested earlier this year. The trailer hints at what will be a comprehensive look at Ai’s life and work, a powerful reminder of his importance inside the art world and out. The film will open at Sundance in 2012. blogs.artinfo.com/artintheair/2011/12/22/ai-weiwei-never-sorry-documentary-releases-powerful-first-trailer/