Originally posted by the Voice of America. Voice of America content is produced by the Voice of America, a United States federal government-sponsored entity, and is in the public domain. Hong Kong Protesters, Police Trade Petrol Bombs, Tear Gas Reuters HONG KONG - Fresh violence erupted around a besieged Hong Kong university campus Sunday morning, as protesters braced for a possible final police push to clear them after fiery clashes overnight. Huge fires had lit up the night sky at Hong Kong Polytechnic University in Kowloon district hours earlier as protesters hurled petrol bombs, some by catapult, and police fired volleys of tear gas to force them up onto the podium of the red-brick campus. After a few quiet hours as protesters slept on lawns and in the university library, police fired fresh rounds of tear gas shortly after 10 a.m. Activists hurled petrol bombs in return, some igniting trees outside the campus. Hours earlier, squads of Chinese soldiers dressed in shorts and T-shirts, some carrying red plastic buckets or brooms, emerged from their barracks in a rare public appearance to help residents clear debris blocking key roads. .