The Macpherson principle is an anti-discrimination principle, originating in the 1999 Macpherson Report by judge Sir William Macpherson into the 1993 racist murder of Stephen Lawrence, a British black teenager. In the report, Macpherson offered as a principle that all complaints about incidents of racism should be recorded and investigated as such, when they are perceived by the complainant or someone else as acts of racism. It was first articulated in the Macpherson Report of 1999.