Stephen Adrian Lawrence (13 September 1974 – 22 April 1993) was an 18-year-old black British student from Woolwich, southeast London, who was murdered in a racially motivated attack while waiting for a bus on Well Hall Road in Eltham, on the evening of 22 April 1993. The case became a cause célèbre; its fallout included changes of attitudes on racism and the police, and to the law and police practice. It also led to the partial revocation of the rule against double jeopardy. Two of the perpetrators were convicted of murder on 3 January 2012.
After the initial investigation, five suspects were arrested but, at the time, not charged; a private prosecution subsequently initiated by Lawrence's family failed to secure convictions for any of the accused. It was suggested during the investigation that Lawrence was killed because he was black, and that the handling of the case by the Metropolitan Police Service (MPS) and Crown Prosecution Service (CPS) was affected by issues of race. A 1998 public inquiry, headed by Sir William Macpherson, concluded that the original MPS investigation was incompetent and that the force was institutionally racist. It also recommended that the double jeopardy rule should be repealed in murder cases to allow a retrial upon new and compelling evidence: this was effected in 2005 upon enactment of the Criminal Justice Act 2003. The publication in 1999 of the resulting Macpherson Report has been called "one of the most important moments in the modern history of criminal justice in Britain". Jack Straw said that ordering the inquiry was the most important decision he made during his tenure as home secretary from 1997 to 2001. In 2010, the Lawrence case was said to be "one of the highest-profile unsolved racially motivated murders".