More than 300 family, friends and campaigners turned out on a freezing December eveing to mark the one month anniversary of the death of Leon Briggs.
The 39-year-old father of two died in police custody after being arrested on Marsh Road in Luton on November 4.
His death is now the subject of an independent inquiry but campaigners have set up Justice4Leon to make sure justice is done.
The crowd outside Luton police station, where a makeshift shrine has been growing since Leon’s death, heard from his friends, and campaigners for other men who have died in police custody.
One of the speakers was Carole Duggan, aunt of Mark Duggan whose inquest into his death during a police investigation is now taking place.
She said families need to band together to ensure justice.
And campaigners have said they will hold monthly vigils.
The Independent Police Complaints Commission (IPCC) says 60 witnesses have come forward during the ongoing investigation.
Five police officers and two support staff have been suspended.