Faded supremacy: Shanghai children beneath a mural depicting Mao Zedong. Since his time, decisions are made more by consensus among party leaders

Ever since China’s leaders sent in tanks and soldiers to mow down pro-democracy protesters in Beijing 20 years ago, the Chinese Communist party has faced a constant stream of predictions about its imminent demise. American President Bill Clinton was one of the most pointed critics, telling Jiang Zemin, Chinese president, in 1997 that China’s authoritarian system “was on the wrong side of history”.