Outside court, Mark Duggan's family called his death "an execution."
Mr Duggan's aunt Carole Duggan said: "For as long as it takes, God give my family strength."
She said: "The majority of the people in this country know that Mark was executed.
"We are going to fight until we have no breath left in our body for Mark and his children."
Vowing not to give up, she added: "No justice, no peace."
Met Police chief thanks Duggan family after they appeal for peace as friend says family are 'still too raw' to meet with police watchdog.
Mark Duggan's family have reacted angrily to the inquest conclusion that he was lawfully killed when he was shot by police in 2011.
Mark Duggan was lawfully killed when he was shot dead by a police marksman in 2011, a jury has found.