Christopher Alder choked to death on the floor of a police station in Hull on 1 April 1998.
Officers carried him into the station unconscious and handcuffed—and left him face down on the floor.
CCTV recorded officers chatting and saying that Christopher was faking illness. They also appear to be making monkey noises at him, and laughing.
His family have campaigned tirelessly for justice ever since.
An inquest in 2001 recorded his death as unlawful killing. A year later, a court cleared the five police officers of manslaughter and misconduct.
The Independent Police Complaints Commission in 2006 found the officers guilty of a “most serious neglect of duty” and “unwitting racism”.
Humberside police then apologised.