Stephen Lawrence murder: Judge condemns 'racist, evil' crime as he sentences Gary Dobson and David Norris After almost 19 years of tireless campaigning, Neville and Doreen Lawrence were at the Old Bailey to see two of their son's killers finally brought to justice. The judge had already indicated that Dobson, 36, and Norris, 35, faced the prospect of a dramatically reduced jail term because they were juveniles at the time of the attack in 1993. He said he was unable to sentence them as the mature men they were today and that the sentence might accordingly be lower than some expect. Dobson was 17 while Norris was 16, meaning that their sentences were based on case law stemming from juvenile murder cases rather than adult cases. David Norris (left) was 16 at the time of the attack while Gary Dobson was 17 (PA) However, the judge took into account the fact that the murder was racist and that the pair realised that one of their group might use a knife. He told the court that three or four other killers remained at large and appealed to those who have so far remained silent, to come forward. Norris was told his sentence would be reduced by 483 days due to the time already served since his arrest in September 2010. Dobson was not afforded such a reprieve as he was already in jail on a drug offence. As the judge stood to leave, there was a brief outburst from the public gallery as a man believed to be Dobson's father shouted: "Shame on all of you." In mitigation, Stephen Moses, for Dobson, said that he was 17 at the time of the attack, and had only left his house for around half an hour. He said Dobson came from a "loving family" and had no previous convictions for violence. He also told the court that there was no evidence that he had been a "leader" of the gang and added that the attack had not been premeditated, a statement that was immediately rejected by the judge. Gary Dobson and David Norris in 1999 (PA) Dobson has previous convictions for theft, from 1993 and 2000, and was already serving a five-year sentence for possession of a class B drug with intent to supply when he was arrested in 2010 on suspicion of murdering Mr Lawrence. In stark contrast to the quiet dignity shown by the Lawrence family, Dobson yelled out to the jury as he was led away from the dock when the verdicts were delivered yesterday. It was at 2.39pm, after a 50 day trial, that Dobson and Norris were found guilty of being part of a gang of "like minded racists" who stabbed the 18-year-old to death in Eltham, south London. Luke Knight (L), Neil Acourt (2ndL, partially obscured), David Norris (C back wearing blue shirt), Jamie Acourt (2ndR wearing white shirt) after they had given evidence to the Macpherson inquiry in 1998 (Paul Hackett/REUTERS) The couple, who have separated since their son's killing, welcomed at least a partial victory in their quest for justice. Doreen Lawrence is flanked by her son Stuart (L) and ex-husband Neville outside the Old Bailey in London after hearing the verdict (EPA) Mr Lawrence also appealed for the other members of the gang to now face court as well, calling on Dobson and Norris to name those responsible. The Metropolitan Police has vowed to try and bring the remaining suspects to justice. Scotland Yard Commissioner Bernard Hogan-Howe said today "the other people involved in the murder of Stephen Lawrence should not rest easily in their beds" as he welcome the convictions of David Norris and Gary Dobson. Acting Deputy Commissioner Cressida Dick, one of Scotland Yard's most senior officers, warned them that the inquiry would continue. Dobson has been identified as the "weakest link" in the gang and will be asked to turn "supergrass" by naming the others responsible whilst in prison. He could be offered the prospect of a reduced sentence if he agrees to testify against the others. Until the convictions, Mr Lawrence's murder was the country's most notorious unsolved killing. Mr Lawrence's family mounted a private prosecution in 1994, but that too was abandoned two years later. The inquest into the teenager's death found that he had been murdered in a "completely unprovoked racist attack by five white youths" as he waited at a bus stop with his friend Duwayne Brooks. A tiny drop of Mr Lawrence's blood was found on a jacket belonging to Dobson. But the jury, who had been shown a surveillance video of the men bragging about committing violence against 'blacks" and 'Pakis," were not convinced by this argument and found both men guilty. Later, the Metropolitan Police paid tribute to the Lawrence family's campaigning. But Miss Dick admitted it was "a matter of huge regret to the Met that it has taken 18 years to get to this point." Jack Straw, the former home secretary, said Britain had further to go to tackle racism but that Mr Lawrence's murder had sparked a "sea change" in attitudes. Mr Straw, who ordered the Macpherson Inquiry into the case in 1997, said progress had been made in the years since the murder. But he told BBC Radio 4's Today programme: "We have still got a lot further to go because if you are black or Asian and you are young, your sense of how you are treated is very different and more adverse and is very different from anybody else. I think we've probably got most of the legislation we need in place. It's about ensuring people are less tolerant of racism, whether it's explicit - of which I think there is much less these days - or just implicit, lazy, uncaring, intruding remarks made in the heat of the moment, on the football field and so on. I think everybody accepts that the terrible murder of Stephen Lawrence and, yes, the inquiry I established, have produced a sea change in British society.