"Trawled the streets looking for a white person"
as most [over 90 percent?] of the UK population is white, the can't have needed much trawling!

"we still hear about Stephen Lawrence all the time"
Bullshit, I listen to natinal radio, watch the tv news, and buy 2 newspapers a day, can't rember wehn stephen larence was mentioned in any of the media.
Do a check on Google News, and check for yourself

If your trying to present an argument, do so using facts, not made up crap anf histeria.