Hundreds of anti-government protesters gathered in Hong Kong on Sunday, AFP journalists witnessed, after China sparked outrage with a proposed new security law that campaigners fear will spell the end of the city's cherished freedoms. The protesters chanted pro-democracy slogans in Causeway Bay, one of the city's busiest shopping districts, as riot police warned them with loudspeakers and flags that the gathering was unlawful and that they should disperse. yz-su-qan/axn