accused of obstructing first-aid service and emergency services and interfering with the work of medical personnel inside hospitals. The arrest of volunteer medics during the siege of PolyU was condemned by medical professionals. Police were accused of using excessive force on already subdued, compliant arrestees. Videos showed the police kicking an arrestee, pressing one's face against the ground, using one as a human shield, stomping on a demonstrator's head, and pinning a protester's neck to the ground with a knee. Video footage also shows the police beating passers-by, pushing and kicking people who were attempting to mediate the conflict, and tackling minors and pregnant women. Protesters reported suffering brain haemorrhage and bone fractures after being violently arrested by the police. Amnesty International stated that police had used "retaliatory violence" against protesters and mistreated and tortured some detainees. Detainees reported being forced to inhale tear gas, and being beaten and threatened by officers. Police officers shined laser lights directly into one detainee's eyes. The police were accused of using sexual violence on female protesters. A female alleged that she was gang raped inside Tsuen Wan police station, while the police reported that their investigation did not align with her accusation, and later announced plans to arrest her on suspicion of providing false information. Some detainees reported police had denied them access to lawyers and delayed their access to medical services. Many of these allegations were believed to have taken place in San Uk Ling Holding Centre. Questionable tactics and unprofessional behaviour The kettling of protesters, the firing of pepper ball rounds at protesters at near point-blank range, driving dangerously were also sources of controversy. A police officer was suspended after he hit one protester with a motorcycle and dragged him on 11 November 2019. He was later reinstated. A police van suddenly accelerated into a crowd of protesters, causing a stampede as STS officers exiting from the van chased protesters in Yau Ma Tei on 18 November 2019. Police defended the latter action as an appropriate response by well-trained officers to attacks by protesters, and that "[driving] fast doesn't mean it is unsafe". Some police officers did not wear uniforms with identification numbers or failed to display their warrant cards, making it difficult for citizens to file complaints. The government explained in June 2019 that there was not enough space on the uniforms to accommodate identification numbers. In June 2020, the