1. SAN FRANSISCO, UNITED STATES - SEPTEMBER 27: Visitors examine 'Trace,' an installation by Chinese artist Ai WeiWei's that is part of @Large: Ai WeiWei exhibit on Alcatraz on September 27, 2014 in San Francisco, California, United States. (Photo by Tayfun Coskun/Anadolu Agency/Getty Images)
    SAN FRANSISCO, UNITED STATES - SEPTEMBER 27: Visitors examine 'Trace,' an installation by Chinese artist Ai WeiWei's that is part of @Large: Ai WeiWei exhibit on Alcatraz on September 27, 2014 in San Francisco, California, United States. (Photo by Tayfun Coskun/Anadolu Agency/Getty Images)
  2. SAN FRANCISCO, CA - SEPTEMBER 24:  Visitors look at Ai Weiwei's 'With Wind' installation at the @Large: Ai Weiwei on Alcatraz on September 24, 2014 in San Francisco, California. The new @Large: Ai Weiwei on Alcatraz will open to the public on September 27th and features a series of seven site-specific installations by artist Ai Weiwei in four locations on Alcatraz Island. The exhibition explores human rights and freedom of expression through large-scale sculpture, sound, and mixed-media works. The show runs through April 2015.  (Photo by Justin Sullivan/Getty Images)
    SAN FRANCISCO, CA - SEPTEMBER 24: Visitors look at Ai Weiwei's 'With Wind' installation at the @Large: Ai Weiwei on Alcatraz on September 24, 2014 in San Francisco, California. The new @Large: Ai Weiwei on Alcatraz will open to the public on September 27th and features a series of seven site-specific installations by artist Ai Weiwei in four locations on Alcatraz Island. The exhibition explores human rights and freedom of expression through large-scale sculpture, sound, and mixed-media works. The show runs through April 2015. (Photo by Justin Sullivan/Getty Images)
  3. SAN FRANCISCO, CA - SEPTEMBER 24:  A view of Ai Weiwei's 'Trace' installation at the @Large: Ai Weiwei on Alcatraz on September 24, 2014 in San Francisco, California. The new @Large: Ai Weiwei on Alcatraz will open to the public on September 27th and features a series of seven site-specific installations by artist Ai Weiwei in four locations on Alcatraz Island. The exhibition explores human rights and freedom of expression through large-scale sculpture, sound, and mixed-media works. The show runs through April 2015.  (Photo by Justin Sullivan/Getty Images)
    SAN FRANCISCO, CA - SEPTEMBER 24: A view of Ai Weiwei's 'Trace' installation at the @Large: Ai Weiwei on Alcatraz on September 24, 2014 in San Francisco, California. The new @Large: Ai Weiwei on Alcatraz will open to the public on September 27th and features a series of seven site-specific installations by artist Ai Weiwei in four locations on Alcatraz Island. The exhibition explores human rights and freedom of expression through large-scale sculpture, sound, and mixed-media works. The show runs through April 2015. (Photo by Justin Sullivan/Getty Images)
  4. SAN FRANSISCO, UNITED STATES - SEPTEMBER 27: 'Trace,' an installation by Chinese artist Ai WeiWei's that is part of @Large: Ai WeiWei exhibit on Alcatraz on September 27, 2014 in San Francisco, California, United States. (Photo by Tayfun Coskun/Anadolu Agency/Getty Images)
    SAN FRANSISCO, UNITED STATES - SEPTEMBER 27: 'Trace,' an installation by Chinese artist Ai WeiWei's that is part of @Large: Ai WeiWei exhibit on Alcatraz on September 27, 2014 in San Francisco, California, United States. (Photo by Tayfun Coskun/Anadolu Agency/Getty Images)
  5. SAN FRANCISCO, CA - SEPTEMBER 24:  A detail view of Ai Weiwei's 'Blossom' installation at the @Large: Ai Weiwei on Alcatraz on September 24, 2014 in San Francisco, California. The new @Large: Ai Weiwei on Alcatraz will open to the public on September 27th and features a series of seven site-specific installations by artist Ai Weiwei in four locations on Alcatraz Island. The exhibition explores human rights and freedom of expression through large-scale sculpture, sound, and mixed-media works. The show runs through April 2015.  (Photo by Justin Sullivan/Getty Images)
    SAN FRANCISCO, CA - SEPTEMBER 24: A detail view of Ai Weiwei's 'Blossom' installation at the @Large: Ai Weiwei on Alcatraz on September 24, 2014 in San Francisco, California. The new @Large: Ai Weiwei on Alcatraz will open to the public on September 27th and features a series of seven site-specific installations by artist Ai Weiwei in four locations on Alcatraz Island. The exhibition explores human rights and freedom of expression through large-scale sculpture, sound, and mixed-media works. The show runs through April 2015. (Photo by Justin Sullivan/Getty Images)
  6. SAN FRANCISCO, CA - SEPTEMBER 24:  A detail view of Ai Weiwei's 'Blossom' installation at the @Large: Ai Weiwei on Alcatraz on September 24, 2014 in San Francisco, California. The new @Large: Ai Weiwei on Alcatraz will open to the public on September 27th and features a series of seven site-specific installations by artist Ai Weiwei in four locations on Alcatraz Island. The exhibition explores human rights and freedom of expression through large-scale sculpture, sound, and mixed-media works. The show runs through April 2015.  (Photo by Justin Sullivan/Getty Images)
    SAN FRANCISCO, CA - SEPTEMBER 24: A detail view of Ai Weiwei's 'Blossom' installation at the @Large: Ai Weiwei on Alcatraz on September 24, 2014 in San Francisco, California. The new @Large: Ai Weiwei on Alcatraz will open to the public on September 27th and features a series of seven site-specific installations by artist Ai Weiwei in four locations on Alcatraz Island. The exhibition explores human rights and freedom of expression through large-scale sculpture, sound, and mixed-media works. The show runs through April 2015. (Photo by Justin Sullivan/Getty Images)
  7. SAN FRANSISCO, UNITED STATES - SEPTEMBER 27: A general view of Alcatraz island hosting the Chinese artist Ai WeiWei's installations that are part of @Large: Ai WeiWei exhibit on September 27, 2014 in San Francisco, California, United States. (Photo by Tayfun Coskun/Anadolu Agency/Getty Images)
    SAN FRANSISCO, UNITED STATES - SEPTEMBER 27: A general view of Alcatraz island hosting the Chinese artist Ai WeiWei's installations that are part of @Large: Ai WeiWei exhibit on September 27, 2014 in San Francisco, California, United States. (Photo by Tayfun Coskun/Anadolu Agency/Getty Images)
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