The mother of murdered teenager Stephen Lawrence has launched a campaign to mark the 20th anniversary of his death.
Doreen Lawrence is calling for fairer community policing. It's one year since her son's killers were convicted.
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Pictures of today's events unfolding following a major security incident at the Houses of Parliament.
At least two people have died after a knifeman brought terror to the heart of Westminster.
The Cobra committee brings together government ministers with senior officials of the emergency services and security agencies.