Five gay rights activists were yesterday accused of obstructing a police officer during a protest in which one of the activists was tied to the gates of Central police station. Noel Chen, 28, Yeo Wai-wai, 25, Yeung King-yip, 23, Ng Chi-keung, 31, and Kenneth Cheung Kam-hung, 26, pleaded not guilty to the obstruction charge in Western Court. Prosecutor Simon Tam alleged Senior Inspector Lam Hung-chuen was impeded in maintaining order on August 19 last year during a protest against a raid on the Fetish Fashion sex shop. Taking the witness stand, Senior Inspector Lam said he did not consider it unlawful for the accused to tie one of the group to the gate of Central police station. 'However, the commotion that followed which affected the traffic nearby makes the act illegal,' Inspector Lam said, explaining that he decided to arrest the four men and one woman when they ignored his requests to untie Chen. The five were among a group of about 10 demonstrators, followed by scores of journalists, outside the police station in Hollywood Road. The protest, organised by gay and lesbian group Rainbow Action, was against a police raid on the Fetish Fashion sex shop in Cochrane Street, Central, on August 12 last year. The group was not related to the shop. Defence counsel Douglas Kwok Kam-tao produced a videotape of the August 19 incident which showed a man in black - identified in court as Chen - bound spread-eagled to the station's iron gate. Senior Inspector Lam said he saw all of Chen's co-accused help tie Chen to the gate with ropes. 'I told them to stop or they would be arrested,' Inspector Lam said. He said the protesters' action 'did hinder the traffic to a certain extent and cause a certain degree of danger'. The trial before Magistrate Stephen Wong Wing-chi continues.