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. Tensions Escalate in Hong Kong as Protesters Blame Police Suzanne Sataline HONG KONG - Residents of Hong Kong, already tense after weeks of protests against the city's leader and police, were deeply shaken after masked assailants wearing white T-shirts savagely beat people dressed in black, the color of this summer's democracy movement. The attackers descended late Sunday on an MTR rail station in the far northern district of Yuen Long, along the border with mainland China. Victims and rail riders uploaded dozens of videos that showed people bloodied and dazed. One witness complained that police arrived after a half hour and allegedly left after 15 minutes. Six were arrested, as police searched for the people responsible for the beatings of 45 people late Sunday night. The targeted victims included a lawmaker, journalists, and passersby. Businesses were so worried about further tensions that shops and malls remained closed. .