New York (AFP) – The United States said Wednesday it had charged four Chinese intelligence officers with helping an American citizen spy on prominent critics of China. Together all five conspired to silence Chinese dissidents, pro-democracy activists and human rights leaders, New York prosecutors said in a statement. The US citizen — 73-year-old Shujun Wang, a prominent Chinese-born academic living in New York — was arrested in March on suspicion of acting as an agent of the Chinese government. The indictment, dated Tuesday, accuses him of using the pro-democracy organization that he founded…