Explainer |

Hong Kong’s annual Tiananmen vigil, banned for the first time in 30 years: what you need to know about June 4 event in the city

• The event, the only one of its size on Chinese soil, has been called off by city police amid a ban on large gatherings due to the Covid-19 pandemic
• And with a new national security law in the wings, organisers fear the vigil, which shines a spotlight on the 1989 crackdown, may be outlawed entirely