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LONDON - APRIL 19: People shop in Kingston Upon Thames town centre on April 19th, 2008 in London, England. Tomorrow is the anniversary of right-wing politician Enoch Powell's 'River of Blood' speech. Forty years on Britain is seen as rich in multi-cultural diversity. (Photo by Cate Gillon/Getty Images)

LONDON - APRIL 19:  People shop in Kingston Upon Thames town centre on April 19th, 2008 in London, England. Tomorrow is the anniversary of right-wing politician Enoch Powell's 'River of Blood' speech. Forty years on Britain is seen as rich in multi-cultural diversity.  (Photo by Cate Gillon/Getty Images)