CB v Commissioner of Police

The State's positive operational and investigative duties under Article 4 of the Hong Kong Bill of Rights (prohibition of forced labour) are triggered by a credible suspicion of forced labour or human trafficking, and police decisions on victim-screening are amenable to judicial review for public-law error, but a court will not declare that the absence of a bespoke trafficking/forced-labour offence breaches that duty unless enacting such an offence is shown to be the only effective means of protecting the right.