The art establishment needs to make its support for Ai Weiwei visible | Philip Bishop

A curator's signature on an online petition is not enough. The great museums should publicise China's detainee via their sites One of the most successful attempts to galvanise public support for the detained Chinese artist Ai Weiwei has been a petition started by the Guggenheim Museum and other art institutions. To date, it has been signed by over 140,000 individuals and organisations. The