A protester raises his umbrellas in front of tear gas which was fired by riot police to disperse protesters blocking the main street to the financial Central district outside the government headquarters in Hong Kong

A protester (C) raises his umbrellas in front of tear gas which was fired by riot police to disperse protesters blocking the main street to the financial Central district outside the government headquarters in Hong Kong, September 28, 2014. Hong Kong police used tear gas for the first time on Sunday to disperse pro-democracy protests and baton-charged the crowd blocking a key road in the government district after Hong Kong and Chinese officials warned against illegal demonstrations. REUTERS/Tyrone Siu (CHINA – Tags: CIVIL UNREST POLITICS TPX IMAGES OF THE DAY)