Crowds have gathered outside Tottenham Police Station to take part in a vigil for Mark Duggan, who was shot dead by a Metropolitan Police marksman in 2011.
A jury concluded earlier this week that his killing was lawful, despite evidence that the 29-year-old was unarmed.
Duggan's death sparked riots in many English cities and there have been fears that the protest vigil against the controversial verdict, which his family branded "perverse", could become violent.
A Channel 4 news report suggested that a smaller than expected crowd gathered outside the station in north London, but emotions were clearly still running high.
The crowd held a minute's silence before chanting "No justice, no peace". Later they shouted: "Who are the murderers? Police are the murderers."
According to a tweet from @RichardKerbaj, the security correspondent of The Sunday Times, around 1000 people arrived to commemorate Mark Duggan's death, and speeches from family, friends and supporters all accused the police force of using brutality.
Mr Duggan's mother, Pamela, and aunt, Carole, were joined by crowds carrying placards which read "Justice for Mark Duggan - 1476 deaths in custody or following police contact since 1990, not one conviction".
Carole Duggan told protesters: "The more we people come together and support each other, maybe we can make a better life for our children, for all of those children who have to live in these communities that are over-policed, where they are not free.
"They don't have the same freedom as other children in other parts of the country and that's not fair.
"What we have got to remember - Mark isn't here and we are doing this for his children.
"So let's show the country that we are not this gangster family that the media has been systematically portraying us as.
"Mark was not a gangster, the media sustained a campaign against him.
"We're just an ordinary family."
Reggae and hip hop music was played from loudspeakers as the family of Sean Rigg, a black musician who died in Brixton police station, joined the march.
Trade unionists were also present, while Tottenham Hotspur fans went past the protest to their home game against Crystal Palace at nearby White Hart Lane.