BEIJING, CHINA - MAY 14:  Putting up parasols and umbrellas, student hunger strikers from Beijing University protect themselves from a heat wave as they enter the 5the day of a marathon hunger strike 17 May 1989 at Tiananmen Square as the part of mass pro-democracy protest against the Chinese government. The April-June1989 pro-democracy movement was crushed by Chinese troops in June 1989 when army tanks rolled into Tiananmen Square 04 June.  (Photo credit should read TOSHIO SAKAI/AFP/Getty Images)