Hong Kong police officers have taken away at least seven people holding flowers or candles, including two schoolgirls, in Causeway Bay on the 36th anniversary of the Tiananmen Square crackdown. A source said that police had ramped up patrols in sensitive locations across the city, such as Victoria Park – where candlelight vigils to commemorate the victims of the June 4, 1989, protests in Beijing had been held over the years – in Causeway Bay and the central government’s liaison office in Sai...