Protesters holding pictures of Chinese human rights lawyer Pu Zhiqiang march to the Chinese liaison office in Hong Kong on May 14, 2014 asking for his release following his arrest in Beijing. Police in China have recently detained celebrated human rights lawyer Pu Zhiqiang and other activists, ahead of the sensitive June 4 anniversary of the brutal suppression of anti-government protests in Tiananmen Square in 1989, when hundreds -- by some estimates, thousands -- were killed.  AFP PHOTO / Philippe Lopez        (Photo credit should read PHILIPPE LOPEZ/AFP/Getty Images)