A social worker and teacher imprisoned for his activism, he later wrote about the toll of incarceration and worked to help others behind bars.

Shiu Ka-chun, a former social worker and pro-democracy lawmaker in Hong Kong who devoted his last years to helping protesters imprisoned after a crackdown on dissent, died Friday in Hong Kong. He was 55.His wife, Kelly Hui, said his death, in a hospital, was due to stomach cancer.

In 2016, he was elected as a lawmaker. He focused on welfare issues such as poverty, homelessness and the conditions at homes for the elderly and people with disabilities.

In 2019, Mr. Shiu was convicted of public nuisance charges for his role in Occupy Central and sentenced to eight months in prison.