The number of black people in the criminal justice system is still "blatantly disproportionate", a committee of MPs has warned.
The Home Affairs Committee said in the 10 years since the Macpherson Report, aspects of police race relations, such as stop and search, had got worse.
The MPs said racism still exists within the police, but welcomed the "tremendous strides" in countering racist officers since the death of Stephen Lawrence.
But they said forces had made slow progress on meeting their target of the number of ethnic minority officers they employ.
The MPs also said they were concerned at "apparent discrimination" in the promotion of black and other ethnic minority officers.
Committee chairman Keith Vaz said: "We congratulate the police on the strides they have made in tackling the institutional racism identified by the Macpherson Report 10 years ago.
"However, while there is such blatantly disproportionate representation of particularly black people in the criminal justice system - in the use of stop and search or on the DNA database - there will continue to be damage to community relations which in turn undermine police work.
"Any gains made by the use of stop and search, which we know can be very useful, risk being offset by its impact on community relations."
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