League of Social Democrats members, including lawmaker 'Long Hair' Leung Kwok-hung, were in court yesterday facing charges over two demonstrations. Leung has pleaded not guilty to two counts of criminal damage, acting in a disorderly manner at a public gathering and behaving in a disorderly manner in a public place - after storming a forum on the government's plan to scrap by-elections. Freely Cheng Kei, principal assistant secretary of the Constitutional and Mainland Affairs Bureau, told Kowloon City Court that Leung had marched into the Science Museum with about 100 other protesters, most wearing Guy Fawkes masks, and claimed there were no seats. Cheng said that just before that he had offered Leung a place inside the venue at the request of his boss, bureau secretary Stephen Lam Sui-lung, who is now chief secretary. But Leung had rejected the offer, saying he did not want such special treatment. The seat had been set aside for legislative and district councillors, Cheng said. Soon after, the crowd flooded the hall after breaking doors and injuring some security workers, halting the evening forum, according to the prosecutor's case. The defendants are liable for HK$4,500 worth of damaged property. The bureau had organised the September event. Asked how he felt about the chaos, Cheng said: 'I felt like you [Leung] hijacked the whole session.' Further videos of the incident will be presented to the trial, presided over by Magistrate Peter Law Tak-chuen. Four other defendants - Wong Yeung-tat, Tang Kin-wa, Yung Wai-tong and Chan Sin-ying - were named in some of the counts. The prosecutor dropped charges against Wong Weng-chi. In a separate case at Eastern Court, two protesters, also from the League of Social Democrats, stood trial for disorderly behaviour when transport chief Eva Cheng was speaking at an MTR Corp ceremony in April. Chow Nok-hang, 27, ran onto the stage to throw a pile of 'hell banknotes' - paper offerings for the dead - at Cheng, to protest against rising train fares. LSD colleague Anson Wong Hin-wai, 23, meanwhile, grabbed Cheng's microphone from the stand. They earlier pleaded not guilty to a charge of behaving in a disorderly manner in a public place and an alternative charge of acting in a disorderly manner at a public gathering. Tsui Yiu-man, an account manager with Oval Design, the event's organiser, told the court that he tried twice to stop Chow but failed, scraping his elbow and falling over. Chow was finally led away by MTR workers and police officers. In his opening remarks, acting senior assistant director of public prosecutions Edmond Lee Chun-man said a master of ceremonies suffered a scraped hand when struggling with Wong. The trial continues today before Magistrate Li Kwok-wai.