A schoolboy was stabbed to death during a mugging for a fashionable baseball cap, the Old Bailey has heard.
Kieran died from a single stab wound to the chest
Kieran Rodney-Davis, 15, collapsed and died yards from his home in Fulham, west London, last June.
The court heard he was attacked when three teenagers confronted him and took his cap. When Kieran demanded the hat back he was stabbed once in the chest.
Two youths, both aged 17, who cannot be named for legal reasons, deny murder and robbery.
Aftab Jafferjee, prosecuting, said neither of the youths charged are alleged to have actually wielded the knife, but are accused of being part of a joint enterprise.
Mr Jafferjee told the jury that Kieran was with a friend when they were stopped by three youths "primarily concerned in acquiring a mobile phone".
"The first youth pulled Kieran's hat off. Kieran demanded it back. It was to be his downfall."
Jurors were shown CCTV footage of Kieran leaving a shop wearing the black hat moments before his death.
It was a New Era fitted hat which, unlike a baseball cap was not adjustable at the back, but fitted to the head.
Mr Jafferjee said that at that age "these little things mean a lot".
He added: "This case highlights a joint scourge of our times, especially in towns and cities.
"The carrying of knives by youngsters and the formation of gangs who roam around together to commit crime."
He said Kieran was a victim of three youths "hunting in a pack".
When he asked for his hat back "all attention moved to him".
The court heard Kieran was asked "Do you want to get shanked?" (street jargon for stabbed) to which he replied "No, no, no."
He was then stabbed in the chest. He staggered away but collapsed nearby.
The trial continues.