This installation, part of Ai Wei Wei’s @Large exhibit on Alcatraz, gives a human face to political detainment. The 176 portraits on the floor depict people from around the world who were imprisoned for their beliefs or affiliations (at the time of the installation, most of the people were still imprisoned). Ai Wei Wei, himself a dissident and activist, was unable to travel to the US for the exhibition because his passport had been revoked.The portraits are made of 1.2 million Legos®. Some portions were assembled in the artist’s studio, but others were created onsite by volunteers. This labor and the image of one complex whole created from many small parts reflects the relationship between individuals and the collective.Ai Wei Wei is a Chinese contemporary activist who works in sculpture, installation, photography, film, architecture, curation, and social criticism. The @Large exhibit was open to the public from September 2014 through April 2015.Alcatraz Federal Penitentiary was in operation from 1934 until 1963, during which time it was famous for being virtually impossible to escape from. Today, Alcatraz is a public museum and part of Golden Gate National Recreation Area.