Hong Kong democracy protesters camped out in the centre of the global financial hub on Monday (September 29), continuing a stand-off that represents one of the biggest political challenges for Beijing since the Tiananmen Square crackdown 25 years ago. The unrest, the worst in Hong Kong since China resumed its rule over the former British colony in 1997, sent white clouds of gas wafting among some of the world's most valuable office towers and shopping malls before riot police suddenly withdrew around lunchtime on Monday, after three nights of confrontation. As riot police withdrew, weary protesters slept beside roads or...