Police are to review their playing of music at protest zones, following claims it was used to drown out demonstrators. Assistant Commissioner Dick Lee Ming-kwai yesterday denied there was political motivation behind the decision to play Beethoven's Fifth Symphony during handover protests. Among the slogans shouted were 'Down with Li Peng' which the SAR Government has said could be seditious in certain circumstances. Mr Lee told a radio phone-in the decision would be reviewed if people considered it problematic. 'The decision on that day was my decision. If there is anything wrong, it's my fault. Secondly, our decision contained no political element. We simply wanted to relieve the atmosphere,' Mr Lee said. 'I think police officers are also human beings and have human rights too. They should have chances to relax.' Mr Lee will review the security for handover ceremonies today to help formulate plans for the World Bank Conference in September. 'The World Bank Conference is also an event which many protesters and international terrorists may take as a target activity. We would need to conduct a detailed collection of intelligence and risk assessment before we can decide the security measures,' Mr Lee said. Hong Kong Human Rights Monitor described the move as an unlawful curtailment of freedom of expression. Beijing's Vice-Minister of Public Security Tian Qiyu treated the Hong Kong police, including Commissioner Eddie Hui Ki-on, to lunch in Shenzhen on Saturday to thank them for the protection provided to Chinese leaders.