"Details of the killing remain contested.
Police say Brown was shot dead after a scuffle with officers that left one policeman with a swollen face.
On Friday, they released video footage showing Brown and a friend apparently stealing a $49 box of cigars from a convenience store. The pictures show Brown pushing a member of staff into a display stand.
In American police jargon it was described as a “strong arm” robbery - one that did not involve a weapon.
That was why, according to the official version of events released on Friday morning, Brown and his friend had been stopped in the street.
However, the revelations added fuel to an already combustible situation.
Locals accused police of trying to shift attention from the killing and of concocting a cover story.
Benjamin Crump, a lawyer for the Brown family, said it amounted to a character assassination.
A statement released by the Brown family said: “There is nothing based on the facts that have been placed before us that can justify the execution style murder of their child by this police officer as he held his hands up, which is the universal sign of surrender.”
Even then the police were forced to change their story later in the day.
Thomas Jackson, the chief of Ferguson police, was forced to admit that the officer responsible for the shooting, named as Darren Wilson, had not known Brown was a suspect in the robbery. Instead, he had asked Brown not to walk in the middle of the street so a police car could pass."