Cape Town - The SACP on Tuesday said it would "dip its red banner" in honour of retired Judge Essa Moosa.
Moosa died peacefully at his family home on Sunday morning, after a short illness.
"Judge Moosa rightly understood that the dislodging of apartheid in April 1994 did not mean that the oppression, marginalisation and exploitation of the workers and poor across the world have come to an end," the SACP said in a statement. He had appreciated that the struggle continued.
Moosa played an important role in the country’s liberation struggle. He established the Kurdish Human Rights Action Group as part of their struggle for democratic self-determination, and for linguistic, cultural, and other human rights.
READ: Judge Essa Moosa 'was like a beacon of hope in dark times'
The party said it had worked closely with Moosa and would intensify its work in memory of the judge.
Moosa headed the Office of the Directorate for Priority Crime Investigation (Hawks), which was started in March 2016, to investigate complaints from and against members of the police unit.
The SACP said the workings of the office had to be examined to ensure it was not duplicating the work of the Independent Police Investigative Directorate.
Moosa served as a founder and executive member of the National Association of Democratic Lawyers.
He chaired the Western Cape ANC's constitutional committee, and was a member of the justice ministry's co-ordinating committee that spearheaded community members acting as lay assessors in magistrate's courts.