Relatives of Jay Abatan, who died after what his relatives say was a racist attack, are to hold a candlelight vigil outside Brighton Police Station.
Nobody has stood trial in connection with the death of Jay Abatan
Monday's vigil marks the seventh anniversary of Mr Abatan's death after an attack following a row over a taxi outside a Brighton nightclub.
Manslaughter charges against two men were later dropped.
Mr Abatan's family say they are still seeking answers about the Sussex Police investigation into the death.
Complaints from the family, which set up the Justice for Jay campaign, led to reviews by both Avon and Somerset and Essex forces.
The vigil continues their demand for the release of the Avon and Somerset report, which they believe highlights failings by the investigating team and senior Sussex police management.
Sussex deputy chief constable Joe Edwards met Mr Abatan's brother Michael to discuss the investigation in September.
In November, family members met Home Office minister Hazel Blears to call for the release of the full report.