The event came after Metropolitan Police firearms officer Martin Blake, 40, was found not guilty of murder after he shot Chris Kaba dead during a police stop in Streatham, south London, in 2022.
Following the conclusion of the murder trial, a judge lifted reporting restrictions and it was revealed Mr Kaba was part of a London gang called the 67 and was connected to two previous shootings.
Outside 10 Downing Street, Mr Kaba’s cousin Sheeda Kaba said the home secretary’s new measures on anonymity for firearms officers were like a “punishment” for her cousin’s case.
“All that said to us was that we’re tightening the protection of officers because there could never be another officer that gets this far, going to trial,” she said.
“But talking on behalf of my family, we will not be silenced. We’re gonna carry on saying Chris’s name.”