In November 2020, it was reported that in 2019, the Transport Department changed one option of vehicle license plate searches from "others" to "other traffic and transport related matters," eliminating the ability of reporters to conduct license plate searches. Because of the change, RTHK reporter Bao Choy was charged with violating the Road Traffic Ordinance while producing a documentary on the 2019 Yuen Long attacks. In April 2021, Bao was found guilty, and in response, the Journalists Association said that press freedom was being undermined, stating "Today will be remembered and must be remembered in history... a reporter in Hong Kong who conducted vehicle searches to find out more about the Yuen Long attacks demonstrated the role of the media as a watchdog. The relentless effort of the journalist to find out the whole truth of the Yuen Long attack ... this is what the fourth power is about."