A boy holds a candle during the city’s annual candlelight vigil to mark the 1989 Tiananmen Square massacre. Hong Kong, which operates in different economic and legal system from the mainland, is the only place on Chinese soil where the massacre is marked. (Andrew Ross / AFP/Getty Images)
People hold candles during Hong Kong’s annual candlelight vigil to mark the 1989 Tiananmen Square massacre. Hong Kong is the only place on Chinese soil where the massacre is marked. (Andrew Ross / AFP/Getty Images)
Tourists line up beneath a revolutionary statue to enter the mausoleum of the late leader Mao Zedong in Tiananmen Square in Beijing. China stepped up security as relatives of victims marked the 19th anniversary of the crackdown on pro-democracy protests. (Mark Ralston / AFP/Getty Images)