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This paper takes the social unrest in 2019 as a case study and identifies three factors that contributed to the radicalization of social protests in Hong Kong: globalization, digitalization and the U.S. meddling in Hong Kong affairs. First, with the deepening of globalization, the worsening of social-economic conditions had bred populism among the youth. Second, digital technologies and social media platforms also made it easy for young people in Hong Kong to protest in a more covert and radical way. Third, the U.S. support for the Hong Kong opposition leaders added fuel to the radicalization of youth protesters. All these factors finally led to radicalized social protests in Hong Kong. Nevertheless, following the implementation of the National Security Law in Hong Kong SAR, violent activities were largely stopped and social order was gradually restored.

The Hong Kong Society of Rheumatology (HKSR) has developed evidence-based position statements on the use of magnetic resonance imaging (MRI) in axial spondyloarthritis (axSpA). A special interest group (SIG) developed the statements based on the literature review of the following research questions: 1) In whom should SI joint MRI be done to diagnose axSpA? 2) Should spine MRI be performed for diagnosis of axSpA? 3) Should spine and SI joint MRI be used in the assessment and monitoring of disease activity? 4) Which MRI sequence(s) should be used in axSpA? These statements have at least 75% agreement from voting rheumatology fellows of HKSR, and are developed to serve as local practice guidelines for rheumatologists and musculoskeletal radiologists in the management of axSpA.