James Welch, legal director for human rights group Liberty, said:
Statistics suggest that Mr Lawrence's experience of repeated searches is not unusual.
The police maintain that stop and search is an important tool in their armoury. But they seem incapable of exercising the power in a non-discriminatory way.
That will leave many questioning whether they should have the power of stop and search at all.
More top news
Four people have been stabbed in a series of knife attacks at the Notting Hill Carnival.
Mostly fine for Bank Holiday Monday
The bus was travelling to Baton Rouge on Sunday morning to deliver flood relief aid when the crash happened.