Protesters block the main street to the financial Central district, outside the government headquarters in Hong Kong, September 29, 2014. Hong Kong democracy protesters defied volleys of tear gas and police baton charges to stand firm at the global financial hub on Monday, one of the biggest political challenges for Beijing since the Tiananmen Square crackdown 25 years ago. China wagged its finger at the student protesters, and warned against any foreign interference as they massed again in business and tourist districts.