Tate Modern Ai Weiwei Sign

Tate Modern Ai Weiwei Sign

Tate/ Bolton & Quinn Ltd via Bloomberg.

The sign ``Release Ai Weiwei'' is displayed on the Thames riverside front of the Tate Modern art gallery in London. The sign was put on show on April 8, 2011, after the Chinese artist, whose work is shown inside the building, was detained by police in China.