'Keeping the momentum': the Hong Kongers fighting a running battle for justice

An attack by a pro-Beijing mob prompted an ingenius response by joggers - but the unique protest is under threat by new national security laws

On 21 July last year Hong Kong police took 39 minutes to arrive at the Yuen Long metro station where mobs of white-clad men attacked commuters and pro-democracy protesters, beating them with metal and wooden rods. At least 45 people were injured, including a pregnant woman.

The closest dispatch station was about one mile away.