Hundreds of pro-Beijing supporters confronted anti-government protesters at a shopping mall in Hong Kong on Thursday, with both sides attempting to outsing each other. Before 1pm, hundreds of pro-Beijing protesters gathered on the atrium of IFC Mall in Central. They were responding to an online call to stage a patriotic flash mob. Many brought national flags and sang the Chinese anthem and other patriotic songs. A giant Chinese flag was unfurled from an upper floor of the mall. Police ban rally planned for Sunday, citing safety concerns The pro-Beijing supporters also chanted slogans, including: “Hong Kong is China’s”; “China-Hong Kong add oil”; and “support Hong Kong police”. One attendee in a Chinese national flag T-shirt called on people to fight the “rioters”. “Rioters, come on, let’s fight,” he shouted. An organiser of the pro-Beijing flash mob, who wished not to be named due to fears of online bullying, said the act was a reaction to the assault on a teacher on Wednesday night. On that day, a male teacher was punched in the face after he confronted and filmed anti-government protesters at Kowloon Bay. News footage of the clash showed the teacher was singing the Chinese anthem during the confrontation and was with young children. After the assault, the teacher was seen bleeding from his face. The organiser said no one should be assaulted for singing the national anthem. “We support true freedom of speech, not what the rioters think of as freedom,” she said. Police, however, said on Thursday the teacher was assaulted because of filming the protests. Pro-Beijing demonstrators fly Chinese national flags at IFC Mall in Central Video: SCMP/Sum Lok-kei pic.twitter.com/bLrlFqTiSI — SCMP Hong Kong (@SCMPHongKong) September 12, 2019 The pro-China flash mob was immediately countered by a smaller group of supporters of the anti-extradition movement , who sang Glory to Hong Kong . Many wore office clothes and did not hide their face, a contrast to the usual dress code of black T-shirts and face masks among the anti-government protesters. They also chanted: “Liberate Hong Kong; revolution of our times”, the slogan that has become a rallying call of the movement. Anti-government movement takes singing protest to Hong Kong malls There was a brief shouting match between the two sides, which ended after most of the pro-China supporters left the mall at 1.30pm. Andrew Fung Wai-kwong, who was an information coordinator to former Chief Executive Leung Chun-ying, was also seen quarrelling with the protesters. People in IFC Mall, Central, sing protest song Glory to Hong Kong. Pro-Beijing demonstrators and anti-government protesters tried to drown each other out, singing the Chinese national anthem and the protest song respectively Video: SCMP/Sum Lok-kei pic.twitter.com/2H2t5PCZ2C — SCMP Hong Kong (@SCMPHongKong) September 12, 2019 The anti-government protesters remained to chant more of their slogans. Wes Chan, a 24-year-old office worker at IFC, said he did not think the protests and counter-protests would lead to more violence. “We shared our views freely and peacefully,” Chan said. Another worker from Central, who wished not to be named, said he did not mind the pro-China flash mob. “We can sing and so can they,” he said. Do you hear the people sing? 7 Hong Kong protest anthems Supporters of the anti-extradition movement plan to stage more singing rallies across the city on Thursday night, including again at IFC Mall at 7pm. He Wen, a Hong Kong affairs expert at the Shanghai Institute for East Asia Studies, said it was not a good time to stage pro-Beijing counterprotests. “To some extent, you are inciting the other side,” he said, adding the opposition camp was already “lost and tired” after the three-month-long protests. “But they will unite again, after being stimulated by the five-star flag,” he said.