A terrified 14-year-old killed in a knife attack begged a bystander for help as he fled from a mob of black teenagers, the Old Bailey heard today.
Witness Tom Morgan told the court how stab victim Martin Dinnegan ran past him pleading: 'Please help me.'
Mr Morgan said he saw the petrified boy hold his hands out in an attempt to placate one of his pursuers but Martin was felled by a punch to the head.
His attacker then pinned him to the ground and made repeated stabbing motions towards his back, the court heard.
Mr Morgan and his girlfriend rang 999 and, in a tape recording played to the jury, told the operator: 'There is a white guy and a massive group of black guys who are kicking the crap out of him.'
Two men and two youths have pleaded not guilty to the murder of Martin in Holloway in June last year.
Aftab Jafferjee QC, prosecuting, has told the jury how Martin was beaten to
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