Contemporary Chinese artist Ai Weiwei poses for a portrait in Kassel in this June 12, 2007 file photo. Ai was roughed up and reporters and witnesses detained on April 12, the first day of the trial of a Chinese activist who investigated the death toll from last year's devastating Sichuan earthquake. Ai, who travelled to Chengdu to testify in the trial of Tan Zuoren, said he and 10 other volunteers were woken by police entering their hotel rooms before dawn on Wednesday, beaten up and prevented from leaving until after the trial adjourned. REUTERS/Kai Pfaffenbach/Files (GERMANY ENTERTAINMENT DISASTER CRIME LAW)
REUTERS/KAI PFAFFENBACH