Over 300 people attended the funeral march for Sheku Bayoh last Sunday.
Sheku died after being restrained by police in Kirkcaldy, Fife, on 3 May.
His family demand answers to the most basic of questions.
Five weeks on, his death certificate states his death was “unascertained” because the nine police officers involved have failed to make statements.
Last week’s Sunday Herald newspaper ran a front page titled, “Cover Up?”
Sheku’s brother in law, Ade Johnson, said the campaign is asking why the family was lied to in the hours after his death.
It is also asking why the police officers have not been suspended pending investigation of the death.
And it is demanding a law change so that the Public Investigation Review Commission has powers to demand cooperation from the police.
This case is a key test for the Scottish government and the Scottish National Party’s attitude to human rights.
If the centralisation of the regional police forces into one body, Police Scotland, is to be accountable for deaths in police custody then the law will need to be changed to grant powers to order police officers to give evidence.
The family’s fight for justice continues.